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In the Wheatstone's bridge (shown in fig...

In the Wheatstone's bridge (shown in figure) `X = Y` and `A gt B`. The direction of the current between `ab` will be

A

From a to b

B

From b to a

C

From b to a through c

D

From a to b through c

Text Solution

Verified by Experts

The correct Answer is:
B
In the part c a d
`V_( c) - V_(a) gt V_(a) - V_(d)`
`(V_( c) + V_(d))/2 gt V_(a)`
In the part cbd
`V_( c) - V_(b) = V_(b) - V_(d)`
`rArr V_(b) = (V_( c) + V_(d))/2`
`therefore V_(b) gt V_(a)`
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