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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10 Ω

4 Ω

1/4 Ω

1/8 Ω

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detailed solution

Correct option is A

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

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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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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