A student assembles the circuit shown in order to measure three quantities. 1 the current in the circuit 2 the electromotive force (e.m.f.) of the cell 3 the potential difference across the lamp How many ammeters and how many voltmeters are required?
- A0 ammeters, 3 voltmeters
- B1 ammeter, 2 voltmeters
- C2 ammeters, 1 voltmeter
- D3 ammeters, 0 voltmeters