A) \[3\,\,\Omega \]
B) \[6\,\,\Omega \]
C) \[1.5\,\,\Omega \]
D) \[4\,\,\Omega \]
Correct Answer: A
Solution :
\[E=40\,\,V,\,\,V=30\,\,V,\,\,r=a\,\,\Omega \] Internal resistance \[r=\left( \frac{E}{V}-1 \right)R\] \[=\left( \frac{40}{30}-1 \right)9\] \[=\frac{1}{3}\times 9=3\,\,\Omega \]You need to login to perform this action.
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