CBSE X Physics Electricity
power electricity confusion related to formula
Asked by
16th March 2008
5:05 PM
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CBSE X Physics Sources of Energy
sir can u say that an wind mill produce electric current/hour
Asked by Tushar
9th September 2014
9:26 PM
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CBSE X Physics Electricity
An electric oven of 2KW power rating is operated in a domestic electric circuit(220v)that has a current rating of 5Amp. what result do you expect? Explain
Asked by abhinav732382
8th November 2017
8:26 PM
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CBSE IX Physics Work and Energy
Please solve question no 23 with proper explanation
Asked by adityaahuja099
26th November 2017
3:45 PM
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CBSE IX Physics Work and Energy
Please solve question no 24 with proper explanation
Asked by adityaahuja099
26th November 2017
3:47 PM
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CBSE X Science
Power of a lamp is 60W. Find the energy in joules consumed by it in 1s.
Asked by pdcavita
26th November 2017
9:33 PM
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CBSE X Science
What is the maximum power in kilowatts of the appliance that can be connected safely to 13A, 230V main socket?
Asked by pdcavita
26th November 2017
9:37 PM
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CBSE IX Physics Work and Energy
Plz solve question no 5 with proper explanation
Asked by adityaahuja099
27th November 2017
8:07 PM
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ICSE X Physics Electrical Power and Household Circuits
4th ques
4th ques
Asked by lovemaan5500
2nd December 2017
7:13 AM
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ICSE X Physics
What is the power of a machinethat can lift a load of 750N through 15m in 5 sec? What must have been the effort applied? Obtain the M.A. and V.R. of this machine. Assume the machine to be an ideal one and take the distance moved by the effort as 45m.
Asked by bdroy_2014
25th January 2018
1:16 PM
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CBSE X Physics Electricity
volt^2/watt=___________ A)Power B)Current C)Resistance D)Potential difference
Asked by shailesh.solanki
9th February 2018
11:35 AM
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CBSE IX Physics
It takes 20s for a person A to climb up stairs while the other person B does the same in 15s. compare the (1) work done (2)power developed by person A and B
Asked by Muruga
19th February 2018
8:23 PM
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CBSE XII Science Physics
Please provide the complete step by step answer:-
Asked by Varsneya Srinivas
21st February 2018
8:59 PM
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ICSE X Physics
A refeigerator is marked 80W and 220V What is likely to happen if the voltage is reduced to 50V
Asked by lovemaan5500
15th March 2018
7:21 AM
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NEET1 NEET1 Physics
A water pump lifts water from a level 10 m below the ground. Water is pumped at a rate of 30 kg/minute with negligilble velocity. What should be the power ( in h.p.) of engine to do this ?
Asked by dipanshusingla029
3rd April 2018
5:49 PM
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NEET1 NEET1 Physics
What power is required to 10liters of water to a height of 6m, in one minute through a pipe of 1.25cm diameter ?
Asked by anirbanbag81
4th April 2018
5:19 AM
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ICSE VIII Physics Energy
define 1) power 2)work 3) energy
Asked by nathsantanukumar
11th April 2018
5:17 PM
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ICSE VIII Physics
differentitate 1)kinetic energy and potential energy 2)energy and power
Asked by nathsantanukumar
12th April 2018
5:02 PM
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CBSE X Physics Electricity
State which has a higher resistance .A 50 Watt or a 25 Watt lamp .Also find the ratio of their resistances.
Asked by riyamaths
1st June 2018
9:22 AM
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ICSE X Physics
A car exserting a force of 2250 Newton accelerates uniformly so that it acquires a velocity of 72 km per hour find the horsepower required to maintain its velocity
Asked by Samrat
30th June 2018
9:57 AM
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ICSE X Physics
A train of mass 160000 kg is moving on a level track at 54 km per hour if the frictional resistance to the motion is 5kgf per 1000 kg what is the power developed by engine
Asked by Samrat
30th June 2018
7:07 PM
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ICSE X Physics
A car along with passengers weighs 2000 kg it accelerates from 36 km per hour to 90 km per hour in 10 seconds calculate a.acceleration b. Distance covered by car while accelerating c. momentum of car after 10 second d.force developed by the engine of car e.Total energy expanded during accelerationf. power of the engine in Kilowatt
Asked by Samrat
30th June 2018
7:18 PM
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ICSE X Physics
A machine is driven by a 100 kg mass that falls 8 m in 4 seconds it lifts a load of 500 kg vertically upwards a.what is the force in Newton exerted by falling mass b.what is the work done by 100 kg mass falling through 8 m c. what is the power input to the machine d. If the efficiency of the machine 75% what is the power output of the machine e.what is the work done by the machine in 4 sec
Asked by Samrat
30th June 2018
7:24 PM
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ICSE X Physics
A machine is given by a 200 kg mass falling at 8 m in 5 second lifts a load of 100 kg calculate the power input the machine if the efficiency of machine is 80% calculate the height of to which the load is raised in 5 seconds
Asked by Samrat
30th June 2018
11:10 PM
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CBSE X Physics
A 240 V ac mains circuit to which a number of appliances are connected & switched on. 240 ac-Fan(1.2KW)-Refrigerator(200 watt)-two bulbs(60w each,parallely) 1. Calculate the power supplied to the circuit. 2.calculate a) The current in the refrigerator. b) The energy used by the fan in 3 hours c)The resistance of filament of one bulb.
Asked by agraharianiruddha
26th July 2018
7:15 PM
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NEET1 NEET1 Physics
Express the power of a 100watt bulb in CGS unit
Asked by valavanvino1011
8th August 2018
4:33 PM
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ICSE VIII Physics
compare the work done and power of pallavi and parul when both of them can lift the same bag of 20kg to a height of 50cm. in 2and 5 seconds respectively(Take g=10ms-2)
Asked by sujanasudheer37
10th September 2018
10:17 PM
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CBSE X Physics
A train starting from rest at one station, acclerates uniformly and attains a speed v after sometime. After travelling at this speed for sometime, it retards uniformly and stop at the next station. If R be the uniform resistance of the given track and the duration of the uniform motion is just half the total journey time, the average power supplied by the train engine is:- a) (vR)/2 b) (3vR)/2 c) (3vR)/4 d) (vR)/4
Asked by acv27joy
16th September 2018
12:47 PM
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Maharashtra IX Physics
An electric pump has 2kW power. How much water it can lift every minute to height of 10m?
Asked by sagareharsh123
20th September 2018
4:31 PM
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NEET1 NEET1 Physics
A block of mass m is placed at relative equilibrium on an inclined plane which itself is placed on a lift moving upwards with constant velocity 
. If the friction coefficient between block and plane is 
, find the instantaneous power supplied by friction to the block??
a) 
mgsin (2
)/2 , b) mg sin^2
, c) mgsin(2)/2 , d) mgcos^2
. If the friction coefficient between block and plane is , find the instantaneous power supplied by friction to the block?? mgsin (2)/2 , b) mg sin^2, c) mgsin(2)/2 , d) mgcos^2
Asked by patra04011965
26th September 2018
10:15 PM
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CBSE XII Science Physics
Pls solve it
Asked by Vijaybhan07
2nd October 2018
4:41 PM
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ICSE VI Maths
Find the value of (3²)³ + {(-2³)}³ + {-(2³*3³)-8º}
Asked by Keshrisanjay333
14th October 2018
10:47 AM
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CBSE XII Science Maths
how to find 2^(2/3)?
Asked by saxenas55555
27th October 2018
1:34 PM
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ICSE VIII Physics Current Electricity
If an appliance of power P watt be s used for time t hour ,how much electrical energy is consumed in kwh
Asked by alwindcruz45
30th October 2018
7:56 PM
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ICSE X Physics
which requires a thicker connecting wire: 100W-220V or 1500W-220V
Asked by nidhimehendre
6th January 2019
12:38 PM
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CBSE XII Science Physics Ray Optics and Optical Instruments
discuss about the qualitative Idea resolving power of astronomical telescope
Asked by ap996969
23rd January 2019
6:01 PM
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CBSE X Physics Sources of Energy
derive the unit of power...??? fasttttt
Asked by edayoor
8th March 2019
7:53 PM
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CBSE XII Science Physics Current Electricity
1 kilo watt = ?
Asked by ransinghkanoh
18th March 2019
11:04 AM
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ICSE X Physics Current Electricity
please answer both of these question soon
Asked by defence
4th April 2019
7:20 PM
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NEET NEET Physics Current Electricity
A electric heater rated 220v and 550v is connected to ac mains the current drawn is?
Asked by cmyogesh2002
11th April 2019
8:18 AM
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ICSE X Physics Work, Energy and Power
A hydroelectric power station takes its water from a lake whose water level is at a hight of 50m above the turbine, Assuming an overall efficiency of 40 %, calculate the mass of water which must follow through the turbine each second to produce power output of 1MW. Pls solve this question clearly step by step so that i can understand
Asked by krcraju1973
19th May 2019
1:03 PM
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ICSE X Physics
an athelete keeps himself fit by doing press ups.he applies a force of 300N as he pushes up to a distance of 0.5m.he does press ups in 30s.What is the average output in 30s?
Asked by Kanwaranita10
10th July 2019
8:29 PM
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ICSE VII Maths Exponents
WHAT IS THE POWER OF X SQUARE DIVIDED BY Y SQUARE
Asked by jpassociates56
14th August 2019
12:43 PM
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CBSE X Physics Electricity
Resistance of 20ohm, 20ohm and 30ohm are connected in parallel.what resistance must be added in series with the combination to obtain a total resistance of 10ohm.if the complete circuit expands a power of 0.36KW, Find the total current flowing. (Ans 2.5ohm , 6A)
Asked by unshad786
13th September 2019
12:24 PM
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CBSE XI Science Physics
explain all the derivations of chapter-work power energy
Asked by ABHILASHA
16th September 2019
6:55 PM
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NEET NEET Physics
Please answer this
Asked by Prashant DIGHE
17th September 2019
10:01 PM
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ICSE VIII Physics Energy
Calculate the power in the following case : Mass=73k; g =9.8ms^-2;s=37m; t=8.9 s
Asked by anithasaran2014
20th September 2019
6:41 AM
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CBSE X Maths Real Numbers
1÷2^3×5^2
Asked by anila.shaji1
20th October 2019
10:49 PM
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NEET NEET Physics
Please answer this question
Asked by anjanakurup728
26th October 2019
8:15 AM
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ICSE X Physics Work, Energy and Power
A hudroelectric power station takes its water from a lake whose water level is at height of 50m above the turbine. Assuming an overall eficiency of 40% calculate mass of water which must flow through turbine each second to produce power output of 1 MW. (take g=10m/s).
Asked by dkpanch76
24th December 2019
3:30 PM
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CBSE X Physics Electricity
Is electric power related to time?
Asked by mahulejaya
5th January 2020
12:36 PM
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CBSE IX Physics Work and Energy
What is potential energy,kinetical energy,power?
Asked by mohammedfayas007
17th January 2020
9:17 PM
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ICSE X Physics
Machine left side of 200 kg in vertically upward direction if the machine is driven by freely falling mass of 40 kg through a distance of 8 metre in 4 second calculate force exerted by falling mass work done by falling mass power input of machine power output of machine if its efficiency is 75%
Asked by saritamehta3010980
23rd January 2020
1:24 PM
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ICSE X Physics Work, Energy and Power
ch. work
Asked by nilesh.dhote74
27th April 2020
5:57 PM
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ICSE X Physics Work, Energy and Power
ch. work power energy
Asked by nilesh.dhote74
27th April 2020
5:58 PM
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ICSE X Physics Work, Energy and Power
work ch.
Asked by nilesh.dhote74
27th April 2020
6:03 PM
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ICSE X Physics Work, Energy and Power
power numerical
Asked by nilesh.dhote74
27th April 2020
6:13 PM
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ICSE X Physics Work, Energy and Power
conpare the worl done
Asked by nilesh.dhote74
27th April 2020
6:18 PM
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ICSE X Physics Work, Energy and Power
how to find the displacement
Asked by nilesh.dhote74
28th April 2020
10:10 PM
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CBSE VII Maths Exponents and Powers
What is power
Asked by devaniekta
30th April 2020
3:31 PM
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ICSE X Physics Work, Energy and Power
ex. 2c q 5
Asked by nilesh.dhote74
30th April 2020
5:06 PM
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CBSE X Physics Electricity
A electric rerfrigerator rated 400 watt generator 8hour/day.what is th cost of energy to operate it for 30 days at rs.3.00 per kwh
Asked by himanglodhi2
12th May 2020
9:52 AM
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ICSE X Physics Current Electricity
exercise 8b q 14
Asked by nilesh.dhote74
13th May 2020
11:16 AM
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ICSE X Science
exercise 8c numerical 21
Asked by nilesh.dhote74
13th May 2020
1:19 PM
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CBSE X Physics Electricity
Two lamps rated (100w, 220v) and (60w, 220v) are connected in parallel. which lamp consumes more energy and which one gives more brightness? Find the resistance of each lamp. ( Take supply voltage as 220 v).
Asked by niharikag_2004
3rd June 2020
4:00 PM
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NEET NEET Physics
Find power dissipated in 3ohm resistor
Asked by meeragurumani2000
14th July 2020
9:38 AM
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JEE Main Physics
⭕ Explain in detail...!
Asked by vidyavikram10
28th August 2020
6:33 AM
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CBSE X Physics Electricity
A 220 v, 1000w bulb is connected across a 110 v mains supply. the power consumed will be
Asked by swatipjadhav7
1st September 2020
11:01 AM
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ICSE X Physics Current Electricity
Define Power
Asked by zainak698
27th October 2020
11:52 AM
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CBSE X Physics Light - Reflection and Refraction
power of a lens is found to be + 2.5 Diopter what kind of lens is it
Asked by rathodveeru41
18th December 2020
10:02 PM
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CBSE X Physics Light - Reflection and Refraction
power of a lens is found to be + 2.5Diopter what kind of lens is it
Asked by rathodveeru41
19th December 2020
10:33 AM
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CBSE XII Science Physics Current Electricity
calculate the current of X resistor and power of X resistor
Asked by babberkavita
7th January 2021
2:12 PM
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CBSE IX Physics
An engine pumps a fluid of density 1200 kg/m cube through a tube of cross -section area of 4 cm square through a height of 5 m with a speed of 40 cm/s.Find the power of engine
Asked by ayan1.chatterjee
13th January 2021
12:05 PM
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ICSE X Physics Current Electricity
a current of 4 amp flows in a wire of resistance 60 2. calculate: (a) power dissipated in the wire. (b) potential difference across the wire. (c) electrical energy consumed in 2 minutes.
Asked by ashrafali8060
4th May 2021
6:53 PM
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CBSE X Physics Electricity
what is the power of torch bulb rated at 2.5V and 500 mA?
Asked by sunilgupta9419158173
20th July 2021
1:14 PM
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ICSE IX Physics Work and Energy
physics
Asked by dlakshmisrinivas
7th August 2021
9:46 AM
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CBSE IX Physics Work and Energy
An elevator is designed to lift a load of 1000 kg with uniform velocity of 2m/s . Power of the elevator will be?
Asked by tajbindarkaurs
14th November 2021
10:19 AM
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CBSE XII Science Physics Alternating Current
A motor drill draws 3.5 A current at the power line voltage 120 V(RMS). What is the motor's power if the current lags the voltage by 20 degrees?
Asked by arjunsah797
29th March 2022
7:25 AM
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CBSE XI Science Physics Work, Energy and Power
For a liquid drop of radius r falling in air with terminal velocity power delivered by gravitational force is proportional to
Asked by gdeadshot85
12th January 2023
10:28 AM
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ICSE X Physics Work, Energy and Power
Please solve this.. Calculate the power spent by a crane while lifting a load of mass 2000 kg, at velocity of 1.5 m/s. (g = 10m * s ^ - 2)
Asked by sagarmishra
18th March 2023
8:02 PM
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ICSE X Physics Work, Energy and Power
Hi, Solve this question. A car of mass 120 kg is moving at a speed 18 km/h and it accelerates to attain a speed of 54 km/h in 5 seconds. Calculate: (a) the work done by the engine. (b) the power of the engine.
Asked by anubhutiupadhaya
18th March 2023
8:18 PM
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CBSE IX Physics Work and Energy
3)A body does 20 joules of work in 5 seconds what is power
Asked by mailtoparvathyprajith
6th February 2024
9:00 PM
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CBSE XI Science Physics Units and Measurement
Power unit
Asked by rosysahu678
2nd March 2024
6:09 PM
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JEE Main Physics Current Electricity
three bulbs are connected in series after two bulbs s key is connected in parallel then what will be the total power p is?
Asked by avneetsingh09
9th March 2024
1:18 PM
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JEE Main Maths Co-ordinate Geometry
Answer please
Asked by vasavipanchakoti
22nd March 2024
8:16 PM
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