Each diagram displays a section of a circuit. The circle stands for an instrument used to measure the potential difference (p.d.) across the resistor. Which row is correct?
- Athe unit of p.d.: amperes; diagram which shows the meter correctly connected: diagram 1
- Bthe unit of p.d.: amperes; diagram which shows the meter correctly connected: diagram 2
- Cthe unit of p.d.: volts; diagram which shows the meter correctly connected: diagram 1
- Dthe unit of p.d.: volts; diagram which shows the meter correctly connected: diagram 2