A) \[10\,\,\Omega \]
B) \[5\,\,\Omega \]
C) \[20\,\,\Omega \]
D) \[40\,\,\Omega \]
Correct Answer: A
Solution :
Key Idea: In a Wheatstdne's bridge, if \[\frac{P}{Q}=\frac{R}{S},\] then resistance of galvanometer will be ineffective. The given circuit can be shown as.You need to login to perform this action.
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