A) 4 W
B) 2 W
C) 1 W
D) 0.5 W
Correct Answer: B
Solution :
\[r=R\,\left( \frac{{{l}_{1}}}{{{l}_{2}}}-1 \right)\]\[=2\,\left( \frac{240}{120}-1 \right)\] \[=2\,\Omega \]You need to login to perform this action.
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