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## power electricity confusion related to formula

Asked by 16th March 2008 5:05 PM

## sir can u say that an wind mill produce electric current/hour

Asked by Tushar 9th September 2014 9:26 PM

## 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

## 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

## 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

## 4th ques

Asked by lovemaan5500 2nd December 2017 7:13 AM

## 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

## volt^2/watt=___________ A)Power                    B)Current                C)Resistance               D)Potential difference

Asked by shailesh.solanki 9th February 2018 11:35 AM

## 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

### CBSE XII Science Physics

Asked by Varsneya Srinivas 21st February 2018 8:59 PM

## 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

## 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

## 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

## define  1) power 2)work 3) energy

Asked by nathsantanukumar 11th April 2018 5:17 PM

## differentitate  1)kinetic energy and potential energy  2)energy and power

Asked by nathsantanukumar 12th April 2018 5:02 PM

### NEET1 NEET1 Physics

Asked by minipkda 24th May 2018 6:57 AM

## 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

## 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

## 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

## 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

## 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

## 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

## 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

## Express the power of a 100watt bulb in CGS unit

Asked by valavanvino1011 8th August 2018 4:33 PM

## 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

## 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

## 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

## 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

Asked by patra04011965 26th September 2018 10:15 PM

## Pls solve it

Asked by Vijaybhan07 2nd October 2018 4:41 PM

## Find the value of (3²)³ + {(-2³)}³ + {-(2³*3³)-8º}

Asked by Keshrisanjay333 14th October 2018 10:47 AM

## how to find 2^(2/3)?

Asked by saxenas55555 27th October 2018 1:34 PM