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Question

Physics Question on Current electricity

The resistance in ohm in the four arms of wheatstone bridge are as follows. In which case the bridge is balanced ?

A

1, 2, 3, 4

B

2, 2, 3, 4

C

3, 3, 3, 4

D

4, 4, 4, 4

Answer

4, 4, 4, 4

Explanation

Solution

Balanced Wheatstone principle requires PQ=RS\frac{P}{Q} = \frac{R}{S}