The diagram shows a car ignition switch and starter motor. The ignition switch is connected in a circuit with long, thin wires. The starter motor is connected in a circuit with short, thick wires. What explains why these wires are chosen?
- AEach circuit needs to contain the same total mass of wire.
- BThicker wires heat up more quickly when the relay is switched on.
- CThin wires have lower resistances.
- DThe ignition switch circuit carries a smaller current than the starter motor circuit.