Physics

Problem

Two ideal batteries of emfs

6\,\text{V}

and

3\,\text{V}

are connected in series so that their polarities oppose each other. They drive a current through an external resistor of

4\,\Omega

and a series internal resistance of

2\,\Omega

. Calculate the current in the circuit. a)

0.75\,\text{A}

0.5\,\text{A}

1.5\,\text{A}

0.6\,\text{A}