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` ot `a`
C. From `b` to `a` through `c`
D. From `a` to `b` through `c`

Answer

B

Explanation

(b) In the part `c b d`,
`V_(C ) - V_(b) = V_(b)- V_(d) implies V_(b) = (V_(C) + V_(d))/(2)`
`V_(C) - V_(a) gt V_(a) - V_(d) implies (V_(C ) + V_(d))/(2) V_(a) implies V_(b) gt V_(a)`