CBSE X Physics
What determines the rate at which energy is delivered by a current?
Asked by ihsanansar123
27th February 2018
8:48 PM
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CBSE X Science
How is energy transformed in thermal power plant?
Asked by ihsanansar123
14th March 2018
8:20 PM
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ICSE VIII Physics Energy
state the energy changes 1) an electric bulb 2)an electric motor
Asked by nathsantanukumar
11th April 2018
5:14 PM
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ICSE VIII Physics Energy
explain the change in energy of falling water in a hydro-electric power station
Asked by nathsantanukumar
11th April 2018
10:14 PM
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NEET1 NEET1 Biology
If K is the dielectric constant of a medium and E0 permittivity of free space, then the energy stored per unit volume of the medium is given by:
Asked by harinderamit1234
21st September 2018
5:11 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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CBSE VII Science Electric Current and its Effects
When current is switched on an electric fan converts which energy (mainly) into which energy
Asked by Ranjan.sudha102
17th December 2018
7:31 PM
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CBSE XII Science Chemistry Electrochemistry
What is galvanic cell?
Asked by kripanjalihimansu
28th February 2019
6:57 AM
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ICSE X Physics Current Electricity
An electric device consumes 8640 J of energy in 30 min, while operating at 24 V. Calculate the current drawn by the device.
Asked by aryanirani123
4th March 2019
5:30 PM
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ICSE X Physics Current Electricity
Five 100 w bulbs are used for 10 hours every day for 30 days. Find the cost of electricity if the rate is Rs.4.00 per unit.
Asked by Masummannan747
5th April 2019
12:44 PM
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ICSE VII Physics Energy
In a solar cell,light energy is converted to what?
Asked by bbandab
30th August 2019
9:00 PM
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CBSE X Physics
Two electric bulb (200W) and two electric fans (250W) are used in 6 hrs daily. Calculate electric energy is consumed by the electric appliance.calculate the electric bulb for 1 month.(1Init=9Rs)
Asked by prakashchoudhary7427
2nd January 2020
11:13 PM
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CBSE XII Science Physics
A storage battery of emf 12V and internal resistance 0.5 ohm, is to be charged by a 120V D.C supply of negligible internal resistance. What resistance is required in the circuit for the charging current to be 3A? Calculate: i)How much chemical energy from the dc source is converted to electrical energy? ii)How much electrical energy is converted to chemical energy in the storage battery?
Asked by rayyan20151
5th January 2020
1:52 AM
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CBSE X Physics
An electric heater draws a current of 10A from a 220V supply. What is the cost of using the heater for 5 hrs everyday for 30 days if the cost of 1unit is RS 5.20
Asked by nishamiyan652
28th January 2020
11:30 AM
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ICSE X Physics Work, Energy and Power
exercise 2b q 24
Asked by nilesh.dhote74
30th April 2020
5:05 PM
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ICSE VIII Physics Electricity and Magnetism
define 1) kWh 2)fuse 3)induction 4)static electricity
Asked by mandalnikhil0740.8sdatl
5th May 2020
10:19 AM
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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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CBSE X Physics Electricity
Q8. An electric bulb is marked 18watt-240 volt. If it is used across 240 V power line for one hour daily, calculate the number of days to consume 1 unit of electric energy.
Asked by Khekaleaarya
7th July 2020
8:35 PM
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CBSE X Physics Electricity
An electric bulb draws a current of 8A and works on 250 volt on the average 8 hours a day find the power consumed by co. consumed by the bulb and find if the electric distribution company is the meaning
Asked by nannappa951
11th July 2020
12:22 PM
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CBSE X Physics
a) An electric bulb is rated 220v and 100w what is its resistance? b) calculate the energy consumed by 3 such bulbs if they glow continuously for 10 hours for complete month of november. c)calculate the total cost of the rate at 6.50 per unit.
Asked by ohilubana006
6th February 2021
8:54 PM
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CBSE X Physics Electricity
the electric heater is rated at 2 kilowatt electrical energy cost 4 rupees per kilowatt hour what is the cost of using the heater of 3 hours
Asked by 86047357aa
7th February 2021
10:00 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 Sources of Energy
name the device to produce electricity from fossil fuels
Asked by priyankastudiokumta
4th July 2021
1:09 PM
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Junior V General Science
What is solar power
Asked by kushagarverma20.5misj
5th July 2021
10:21 AM
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NEET NEET Physics Electromagnetic Induction and Alternating Currents
Why I avg. (Current average) multiplied by Vavg (voltage average) and Time period does not give me heat loss in full cycle ? As I know I avg gives me dc component for ac ,I can take + I avg & -I avg for for +half cycle and -half cycle respectively,then net current will be zero in full cycle but both the current are responsible for heat production in ac so why can'take and do I avg ×v avg×T= Heat produced in ac current . (I know that vrms ×Irms×T will give me heat loss ) But my quetion it is why it is wrong which I had first . thank you
Asked by Jaydeepkalal2003
16th August 2021
9:32 PM
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CBSE X Physics Electricity
In a household five tube lights of 40 volt each are used for 5 hours and electric press of 500 volt for 4 hours everyday. Calculate the total energy consumed by the tubelight and press in a month of 30 days
Asked by ksheluka41
3rd November 2022
5:33 PM
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NEET NEET Physics Current Electricity
four bulbs each 40w using 8hours a day ,5 fans each 60w using 8 hours,tv of 120w using 12hours a day, find the total energy and find the electricity bill in a month of the charge is 3.50
Asked by parvathalupeddapuli
24th December 2022
8:25 PM
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CBSE XII Science Physics Current Electricity
what is electricity
Asked by shivashikhar69
9th December 2023
2:27 PM
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ICSE VII Physics Electricity
How does an electric circuit work ?
Asked by miloni77
5th January 2024
7:09 PM
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CBSE XII Science Physics Electrostatic Potential and Capacitance
A parallel-plate capacitor has a plate area of 100c * m ^ 2 and a plate separation of 2.0 cm. has been charged up to 3000 V by a battery. Now, (i) after disconnecting the battery, (ii) keeping the battery connected, the distance between the plates is increased to 5.0 cm intensity of electric field between the plates and the energy of the capacitor. ( epsilon_{0} = 8.85 * 10 ^ - 12 * F * m ^ - 1
Asked by khankaifi178
8th January 2024
10:12 PM
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CBSE IX Physics Work and Energy
1)state energy conversion takes place in hydroelectric power plants? 2)an object of mass 1kg is falling from a height of 10 m. Calculate i) the total energy of object at h=10m ii) Potential energy of an object when h=4m 3)Name energy transfers which occurs when a)an electri bell rings b)someone speake into a microphone c)there is a picture on television screen d)A torch is on
Asked by mailtoparvathyprajith
8th February 2024
12:32 PM
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CBSE X Science Electricity
An electric refrigerator rated 1 kW operates 6 hours daily. What is the cost of the energy to operate it for 15 days at rate of ₹ 3.00 per kWh?
Asked by kmannatpreet4
21st February 2024
7:34 PM
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