A metallic wire of resistance 
is bent to form a square. The resistance between two diagonal points would be
A
B
C
6 Ω
D
3 Ω
Text Solution
Verified by ExpertsThe correct answer is:
D
When a metallic wire of resistance 
is bent to form a square, the equivalent circuit diagram is as shown in ligure.
Resistance of arm, 
Similarly, resistance for arm, 
As the arms 
and 
are in parallel
Their effective resistance is 
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