A) \[7\Omega \]
B) \[9\Omega \]
C) \[11\Omega \]
D) Zero
Correct Answer: C
Solution :
Given, emf of cell E = 200 V Internal resistance of cells \[=1\Omega \] D. C. main supply voltage V = 220 V External resistance R = ?\[r=\left( \frac{E-V}{V} \right)R\] \[1=\left( \frac{20}{220} \right)\times R\]\[\therefore \]\[R=11\Omega .\]You need to login to perform this action.
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