A) R
B) R/2
C) R/4
D) None of these
Correct Answer: A
Solution :
The resistance across the wire \[ABC=R+R\] \[=2R\] and the resistance of wire ADC is 2R ADC and ABC are in parallel \[\frac{1}{{{R}_{eff}}}=\frac{1}{2R}+\frac{1}{2R}\] \[\frac{1}{{{R}_{eff}}}=\frac{1+1}{2R}=\frac{2}{2R}\] \[{{R}_{eff}}=R\]You need to login to perform this action.
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