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Six wires each of resistance r form a te...

Six wires each of resistance r form a tetrahedron. The equivalent resistance between corners 1-2 and 1-3 are respectively

A

`(r)/(2), (r)/(2)`

B

r, r

C

`(r)/(2), r`

D

`r, (r)/(2)`

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The correct Answer is:
A
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