Physics (AS & A Level) · May / June 2023 · Paper 52 · Question 1

Two coils, P and Q, are placed close to each other, as shown in Fig. 1.1. R coil P coil Q Fig. 1.1 A resistor of resistance R is connected in series with coil P. A changing magnetic flux of frequency f in coil P causes an electromotive force (e.m.f.) E to be induced across the terminals of coil Q. It is suggested that E is related to R by the relationship E = 2πf M ( V R + k) where V is the potential difference across the resistor and coil P, and k and M are constants. Plan a laboratory experiment to test the relationship between E and R. Draw a diagram showing the arrangement of your equipment. Explain how the results could be used to determine values for k and M. In your plan you should include: ● 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. 3 Diagram 4 [15]

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