Question

An electric motor takes 5 amperes current form a 220 volt supply line. Calculate the power of the motor and electric energy consumed by it in 2 hours.

Answer 1

Given:         
I = 5 A 
V = 220 V

Power of the motor,
   P  = VI
      =` 5 xx 220`  
      = 1100 W = 1.1 kW
Energy consumed in two hours, 

   E`= pxxt`
      = `1.1 kW xx 2 h`
      = 2.2 kWh