Physics

Problem

A Wheatstone bridge has arms

AB=10\,\Omega

BC=10\,\Omega

CD=10\,\Omega

, and

DA=10\,\Omega

. A galvanometer of resistance

15\,\Omega

is connected between

B

and

D

. A

20\,\text{V}

ideal source is connected between

A

and

C

. What is the current through the galvanometer? a)

0.67\,\text{A}

0.8\,\text{A}

0\,\text{A}

1.0\,\text{A}