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In the arrangement, 11 wires each of resistance `5Omega` are used as sides of cube. A potential difference of 70 V is maintained between corners A and

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In the arrangement, 11 wires each of resistance `5Omega` are used as sides of cube. A potential difference of 70 V is maintained between corners A and B of cube. image
Current flowing in wire Ef is
A. 4A
B. 2A
C. 5A
D. 10A
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Correct Answer - C
The equivalent circuit diagram is as shwn.
image
`R_(AB) = (7r)/(5) or I = (5V)/(7r) = (5xx70)/(7xx5) = 10A`
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