Four wires of equal length and of resistance 10 Ω each are connected in the form of a square. The equivalent resistance between two opposite corners of the square is
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a
10 Ω
b
4 Ω
c
1/4 Ω
d
1/8 Ω
answer is A.
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Detailed Solution
Between the corners, there are two wires in parallel. The resistance of each wire is 2 x 10 ohm. Hence the resistance of combination will be1R=120+120=220 or R=10Ω