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

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

1. A

from a to b

2. B

from b to a

3. C

from b to a through c

4. D

from a to b through c

Register to Get Free Mock Test and Study Material

+91

Verify OTP Code (required)

### Solution:

In the part cbd,

${\mathrm{V}}_{\mathrm{c}}-{\mathrm{V}}_{\mathrm{b}}={\mathrm{V}}_{\mathrm{b}}-\text{\hspace{0.17em}}{\mathrm{V}}_{\mathrm{d}}\text{\hspace{0.17em}}⇒\text{\hspace{0.17em}\hspace{0.17em}}{\mathrm{V}}_{\mathrm{b}}\text{\hspace{0.17em}}=\frac{{\mathrm{V}}_{\mathrm{c}}+{\mathrm{V}}_{\mathrm{d}}}{2}$

In the part c a d,

${\mathrm{V}}_{\mathrm{c}}-{\mathrm{V}}_{\mathrm{a}}\text{\hspace{0.17em}}>\text{\hspace{0.17em}}{\mathrm{V}}_{\mathrm{a}}\text{\hspace{0.17em}}-\text{\hspace{0.17em}}{\mathrm{V}}_{\mathrm{d}}\text{\hspace{0.17em}}⇒\text{\hspace{0.17em}}\frac{{\mathrm{V}}_{\mathrm{c}}+{\mathrm{V}}_{\mathrm{d}}}{2}\text{\hspace{0.17em}}>\text{\hspace{0.17em}\hspace{0.17em}}{\mathrm{V}}_{\mathrm{a}}\text{\hspace{0.17em}}⇒\text{\hspace{0.17em}\hspace{0.17em}}{\mathrm{V}}_{\mathrm{b}}\text{\hspace{0.17em}}>\text{\hspace{0.17em}}{\mathrm{V}}_{\mathrm{a}}$

Register to Get Free Mock Test and Study Material

+91

Verify OTP Code (required)