Question

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

Answer 1

Answer:

2.2 kwh

Explanation:

I = 5 A

V = 220 v

P = V I

P = 220 x  

P = 1100 W

energy consumed in kwh =  power x time in hour / 1000

energy consumed in kwh = 1100 x 2 / 1000

energy consumed in kwh  = 2.2 kwh

Answer 2

Answer:

Electric current = 5 A

potential different = 220 V

Time = 2 x 60 x 60 = 7200

P = VI

220 x 5 V

=> 1100 w

Energy consumed by motor,

=> 1100 x 7200

=> 7.92 x 10^6 J