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

SEE ALSO  The period of a simple pendulum of length 80.0cm was found to have doubled when the length of the pendulum was increased by X. Calculate X.

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