A) \[200\,\,\Omega \]
B) \[6.67\,\,\Omega \]
C) \[5\,\,\Omega \]
D) \[1.5\,\,\Omega \]
Correct Answer: C
Solution :
Current in the circuit, \[I=\frac{P}{V}=\frac{100\,\,\times \,\,{{10}^{-}}^{3}}{0.5}\] \[=\,\,\,200\,\,\times \,\,1{{0}^{-\,3}}\,A\] Voltage across resistance R, \[\operatorname{V}=1.5 -0.5 =1.0 volt\] \[\therefore \,\, Resistance\,\,R=\,\,\frac{V'}{I}\,\,=\,\,\frac{1}{200\times {{10}^{-\,3}}}\,\]\[=\,\,\,50\,\,\Omega \]
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