Question

an electric motor takes 5A from a220V line.determine the power of the motor and the energy consumed in 2 hours.

Answer 1

V=220V
I=5A
P = V×I
P= 220×5
P=1100W
t=2h=2×60×60=7200s
P=1100×7200=7.92×10^6J
Power of the motor is 1100W
Energy consumed by the motor is 7.92×10^6J

Answer 2

Answer:

2200 Watt hour

Explanation:

From the given question,

Current drawn by the electric motor, I = 5 A

The voltage of the motor, V = 220 v

Time for which motor works, t = 2 h

Power consumed by the motor can be given by, P = v x I

                                                                                    = 220 x 5

                                                                                    = 1100 W

Hence, the energy consumed by the motor in two hours can be given by,

E = P x t

   = 1100 x 2 watt-hour

   = 2200 watt-hour

Hence, the total energy consumed by the motor in 2 hours is 2200 watt-hour.