A) \[0.5\,\Omega \]
B) \[2\,\Omega \]
C) \[4\,\Omega \]
D) \[20\,\Omega \]
Correct Answer: B
Solution :
\[H={{i}^{2}}Rt\] Þ \[R=\frac{H}{{{i}^{2}}t}=\frac{80}{4\times 10}=2\,\,\Omega \]
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