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

Options

A. 7920348 J
B. 7120000 J
C. 7020000 J
D. 7920000 J

Answer

D

Explanation

Here, `I = 5A, V = 220 V, t = 2 h = (2 xx 60 xx 60) s = 7200 s`
Power, `P = VI = (220 V)(5 A) = 1100 W`
Energy consumed, `W = VI t = (220 V)(5A)(7200 s) = 7920000 J`.