Which of the following statements correctly describes the behavior of electric current or charge carriers in a metal conductor?
In a d.c. (direct current) circuit, the electric current decreases gradually along the length of a single uniform conductor.
In an a.c. (alternating current) circuit, the free electrons oscillate back and forth about relatively fixed positions.
In a d.c. circuit, individual electrons travel at nearly the speed of light from the negative to the positive terminal.
In an a.c. circuit, there is a net continuous flow of electrons in one direction around the circuit.
51 exam-style questions on CIE IGCSE Physics 4.2.2a Electric current, charge and measuring current. Each one has a worked solution and a mark scheme showing where the marks go.