Question

answer is zero. why with correct explanation​

Answer 1

The circuit of five resistors shown in the figure can be compared to wheat stone bridge.

According to the wheat stone bridge principle..if

P/Q = R/S (which are the branched resistors in this case) then no current flows through the central resistor. If no current is flowing through the resistor it means that potential across its ends is or the potential difference is zero.

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