Fig. 9.1 shows a coil that carries current in a magnetic field. The diagram marks the magnets N and S, the coil points A, B, C, and D, the current direction on side AB, the force F on side AB, and the connections to a battery.
(a)[2]
On Fig. 9.1, draw an arrow labelled X, on side CD, to indicate the direction of the current in this side of the coil, and an arrow labelled P, to show the direction of the force on CD.
(b)[2]
Give two ways of increasing the forces F and P on the sides of the coil.
(c(i))[1]
Name the particles that move in the metal wire of the coil.
(c(ii))[2]
State and explain how this changes the current in the coil.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Arrow drawn from C to D” …