Shown in figure is a Post Office box. In...

Shown in figure is a Post Office box. In order to calculate the value of external resistance, it should be connected between

B' and C

A and D

C and D

B and D

Text Solution

Verified by Experts

The correct Answer is:

(b) Total external resistance will be the total resistance of
whole length of box. It should be connected between A
and D.

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