Physics

Problem

In a Wheatstone bridge, the resistances are

AB=100\,\Omega

BC=150\,\Omega

AD=120\,\Omega

and

DC=160\,\Omega

. A galvanometer of resistance

20\,\Omega

is connected between

B

and

D

, and an ideal

10\,\text{V}

source is connected between

A

and

C

. The magnitude of current flowing through the galvanometer is a)

0\,\text{mA}

1.9\,\text{mA}

from

B

D

14\,\text{mA}

from

B

D

1.9\,\text{mA}

from

D

B