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

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asked Jun 25, 2017 in Physics by Kundan kumar (49,132 points) 34 380 1015

1 Answer

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answered Jun 25, 2017 by Vikash Kumar (144,729 points) 8 11 21
selected Jun 25, 2017 by sarthaks
 
Best answer
Power of the electric motor is given by
P = VI
Where, V = 220 V and I = 5 A
So, Power P = 220 × 5 = 1100 W
Now, the energy consumed = Power × time
Where, P = 1100 W
t = 2 hours = 2 × 60 × 60 seconds = 7200 seconds
So, the energy consumed E = 1100 × 7200 J = 7920000 J

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