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

Options

A. From a to b
B. From b to a
C. From b to a through c
D. From a to b through c

Answer

B

Explanation

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)`