2.3 D.C. Circuits

Question 1

The law of conservation of charge

Answer 1

Electric charge cannot be created or destroyed, (though positive and negative charges can neutralise each other). Charge cannot pile up at a point in a circuit.

Question 2

Emf, E

Answer 2

The emf of a source is the energy converted from some other form (e.g. chemical) to electrical potential energy per coulomb of charge flowing through the source. Unit: V