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

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

 

Answers:-

Given that electric current (I) = 5A, Potential difference (V) =220V
Time (t) =2h=2×60×60s=7200s
 Now Power (P) is given by the expression
P=VI
  =220×5watts
  =1100w
Now Energy consumed by the motor
H= Pt
   =1100×7200J
   =7.92 × 106 J