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What is the total resistance across A an...

What is the total resistance across A and B in the circuit shown in

A

`1 Omega`

B

`2Omega`

C

`1.5 Omega`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
It is a case of a Balanced Wheatstone bridge circuit, which is stated as under.

If `P/Q = R/S,` no current flows through the galvanometer.
In the given circuit,
`2/2 = 2/2`
So, no current fows through `1 Omega`
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