Physics

Problem

A battery of emf

\mathcal E=12\,\text{V}

has an internal resistance

r=2\,\Omega

and is connected in series with an external resistor

R=4\,\Omega

. Find the current in the circuit. a)

3\,\text{A}

1.5\,\text{A}

2\,\text{A}

2.4\,\text{A}