An electric motor takes 5A from a 220 V line. Determine the power of the motor and the energy consumed in 2 h.
Voltage, V = 220 V
Current, I = 5 A
Power, P = V x I = 220V X 5 A = 1100 Watts
Thus, the power of the motor is 1100 watts.
Power, P = 1100 W (Calculated above)
Time, t = 2 hour = 2 x 60 min x 60 sec
= 7200 s
So, Energy, E = P x t
E = 1100W X 7200 sec
Thus, the energy consumed is 7.92 x 106 joules.