Home
Class 10
PHYSICS
An electric motor takes 5 A from a 220 V...

An electric motor takes 5 A from a 220 V line. Determine the power of the motor and the energy consumed in 2 h.

Text Solution

Verified by Experts

Power (P) is given by the expression P = VI
Where, Voltage, V=220V Current, I=5A
`P=220xx5=1100W`
Energy consumed by the motor=Pt
Where, Time, t=2h=2`xx60xx60=7200s`
`:.` energy consumed by the motor
`=Pxxt=100xx7200=7.92xx10^6` J
Therefore, power of the motor=1100W
Energy consumed by the motor`=7.92xx10^6` J
Promotional Banner

Similar Questions

Explore conceptually related problems

A small dc motor operating at 200 V draws a current of 5.0 A at its full speed of 100 pi rad s^(-1) . The resistance of the armature of the motor is 10 Omega . Determine the back emf of the motor. Obtain the power input, power output and efficiency of the motor.

A pump motor is used to deliver water at a certain rate from a given pipe. To obtain twice as much water from the same pipe in the same time, power of the motor has to be increased to :

Two electric bulbs have resistances in the ratio 1 : 2. If they are joined in series, the energy consumed in them are in the ratio

An electric geyser rated 1500W, 250 V is connected to a 250v line mains. Calculate the electric current drawn by it, energy consumed by it in 50 hours and energy consumed if each unit coast Rs. 6.00.