Equivalent resistance of the given circuit is
Text Solution
Verified by ExpertsThe correct answer is:
A
In the given circuit,
= 
Therefore, it is a balanced Wheatstone bridge, and no current will flow through resistance between B and D.
Resistance of arm ADC
R' = R + R = 2R
Resistance of arm ADC,
R'' = R + R = 2R
∴ Now, resistance R' and R'' are in parallel.
Therefore, their resultant resistance
= 
+ 
= 
∴ R eq = R
= 
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