CAPE Physics Unit 2 · 2009 · Paper 1 · Question Q13

Item 13 refers to the diagram below which shows a rectangular coil, resting on points. Part of the coil is between North and South poles of magnets, as shown. A small mass, m, rests on the shaft PQ. The coil is in equilibrium when no current flows. When a current flows from X to Y, what could be done to restore balance?

1. (A)Reverse the direction of the current
2. (B)Move m towards P
3. (C)Move m towards Q
4. (D)Increase mass of m

This question uses a figure or table from the paper — you'll see it when you practise.