A battery is connected to a circuit. It is switched on for 2.0 minutes2.0\text{ minutes}2.0 minutes. During that time, there is a constant current of 0.50 A in the circuit and the battery supplies a total of 180 J of energy. Which option gives the charge that passes and the electromotive force (e.m.f.) of the battery?
Charge = 1.0 C1.0\text{ C}1.0 C, e.m.f. = 3.0 V3.0\text{ V}3.0 V
Charge = 1.0 C1.0\text{ C}1.0 C, e.m.f. = 180 V180\text{ V}180 V
Charge = 60 C60\text{ C}60 C, e.m.f. = 3.0 V3.0\text{ V}3.0 V
Charge = 60 C60\text{ C}60 C, e.m.f. = 180 V180\text{ V}180 V
55 exam-style questions on CIE IGCSE Physics 4.2.3a Electromotive force. Each one has a worked solution and a mark scheme showing where the marks go.