WAEC - Physics (1992 - No. 41)

Calculate the rate at which energy is used up in the circuit illustrated by the diagram

0 W
2 W
4 W
8 W
16 W

Explanation

\(R = \frac{R_1 X R_2}{R_1 + R_2}\)

= 1


\(E = I^2R = 2^2 x 1 =4W\)

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