A potential divider circuit is made from fixed resistors with resistances $2.0\,\Omega$ and $4.0\,\Omega$ joined in series with a $3.0\,\Omega$ resistor that has a sliding contact. These components are connected across a battery with e.m.f. $9.0\,\text{V}$ and zero internal resistance, as shown. What are the greatest and the smallest output voltages for this potential divider circuit?
Physics 9702 · AS & A Level · Potential dividers