Figure 8 shows two straight conductors P and Q connected to a battery and a variable resistor.
![PhyP2Q18b](https://www.easyelimu.com/images/kcsepastpapers/PhyP2Q18b.PNG)
- Using arrows, indicate on the diagram the direction of current that flows through P and Q when the switch is closed.
- State what is observed as the current flows through the conductors.
- Explain the observation in (2).