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In the circuit PneR, the reading of the ...

In the circuit `PneR`, the reading of the galvanometer is same with switch S open or closed. Then

A

`I_R = I_G`

B

`I_P= I_G`

C

`I_Q=I_G`

D

`I_Q=I_R`

Text Solution

Verified by Experts

The correct Answer is:
A
a. Since opening or closing the switch
does not affect the current through G, it
means that in both the cases there is no
current passing through S. This means that potential at A si equal to potential at B
and it is the case of balanced Wheatstone
bridge.

`I_P = I_QI_R = I_G and (a) ` is the correct option.
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