An electric generate rated 12kw, 2kv distribute power through a capable of resistance 20Ω. Calculate the power loss in the cable.

by | Jan 25 | Physics WAEC | 0 comments

A. 120 w
B. 360 w
C. 720 w
D. 2400 w

Correct Answer: Option A

A. 120 w

Explanation

Power – IV

I = P/V

= 12000/2000

I = 6A

Power loss = IR = 6 x 20

= 120W

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