Question

An electric mixer grinder takes takes 15A from 220V line. Calculate the power &energy in 3 minutes

Answer 1

Answer:

Power (P) is given by the expression,

P = VI

Where,

Voltage,V = 220 V

Current, I = 5 A

P= 220 x 5 = 1100 W

Energy consumed by the motor = Pt

Where,

Time, t = 2 h = 2 x 60 x 60 = 7200 s

ˆ´ P = 1100 x 7200 = 7.92 x 106 J

Therefore, power of the motor = 1100 W

Energy consumed by the motor = 7.92 x 106 J