### CBSE X Physics Electricity

## power electricity confusion related to formula

### CBSE X Physics Sources of Energy

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

**Tushar**9th September 2014 9:26 PM

### 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

**abhinav732382**8th November 2017 8:26 PM

### CBSE IX Physics Work and Energy

## Please solve question no 23 with proper explanation

**adityaahuja099**26th November 2017 3:45 PM

### CBSE IX Physics Work and Energy

## Please solve question no 24 with proper explanation

**adityaahuja099**26th November 2017 3:47 PM

### CBSE X Science

## Power of a lamp is 60W. Find the energy in joules consumed by it in 1s.

**pdcavita**26th November 2017 9:33 PM

### CBSE X Science

## What is the maximum power in kilowatts of the appliance that can be connected safely to 13A, 230V main socket?

**pdcavita**26th November 2017 9:37 PM

### CBSE IX Physics Work and Energy

## Plz solve question no 5 with proper explanation

**adityaahuja099**27th November 2017 8:07 PM

### ICSE X Physics Electrical Power and Household Circuits

## 4th ques

**lovemaan5500**2nd December 2017 7:13 AM

### 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.

**bdroy_2014**25th January 2018 1:16 PM

### CBSE X Physics Electricity

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

**shailesh.solanki**9th February 2018 11:35 AM

### 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

**Muruga**19th February 2018 8:23 PM

### CBSE XII Science Physics

## Please provide the complete step by step answer:-

**Varsneya Srinivas**21st February 2018 8:59 PM

### ICSE X Physics

## A refeigerator is marked 80W and 220V What is likely to happen if the voltage is reduced to 50V

**lovemaan5500**15th March 2018 7:21 AM

### NEET NEET 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 ?

**dipanshusingla029**3rd April 2018 5:49 PM

### NEET NEET Physics

## What power is required to 10liters of water to a height of 6m, in one minute through a pipe of 1.25cm diameter ?

**anirbanbag81**4th April 2018 5:19 AM

### ICSE VIII Physics Energy

## define 1) power 2)work 3) energy

**nathsantanukumar**11th April 2018 5:17 PM

### ICSE VIII Physics

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

**nathsantanukumar**12th April 2018 5:02 PM

### 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.

**riyamaths**1st June 2018 9:22 AM

### 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

**Samrat**30th June 2018 9:57 AM

### 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

**Samrat**30th June 2018 7:07 PM

### 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

**Samrat**30th June 2018 7:18 PM

### 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

**Samrat**30th June 2018 7:24 PM

### 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

**Samrat**30th June 2018 11:10 PM

### 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.

**agraharianiruddha**26th July 2018 7:15 PM

### NEET NEET Physics

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

**valavanvino1011**8th August 2018 4:33 PM

### 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)

**sujanasudheer37**10th September 2018 10:17 PM

### 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

**acv27joy**16th September 2018 12:47 PM

### Maharashtra IX Physics

## An electric pump has 2kW power. How much water it can lift every minute to height of 10m?

**sagareharsh123**20th September 2018 4:31 PM