Physics (AS & A Level) · Oct / Nov 2017 · Paper 52 · Question 1

A flat circular coil P carrying a current produces a magnetic field. When a second coil Q is placed with its centre a distance x from the centre of coil P, as shown in Fig. 1.1, an e.m.f. V may be induced in coil Q. centre of coil P coil Q x coil P centre of coil Q Fig. 1.1 It is suggested that V is related to x by the relationship V = V0 e–kx where V0 and k are constants. Design a laboratory experiment to test the relationship between V and x. Explain how your results could be used to determine a value for k. You should draw a diagram, on page 3, showing the arrangement of your equipment. In your account you should pay particular attention to • the procedure to be followed, • the measurements to be taken, • the control of variables, • the analysis of the data, • any safety precautions to be taken. [15] 3 Diagram 4 [Total: 15]

Read automatically from the paper; the printed page above is exact.