Physics (AS & A Level) · Feb / March 2022 · Paper 52 · Question 2
9702
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The question as text
A student investigates a circuit containing a capacitor and a resistor as shown in Fig. 2.1. a.c. power supply to dual-beam oscilloscope C R Fig. 2.1 A dual‑beam oscilloscope is connected across the capacitor of capacitance C and resistor of resistance R. The oscilloscope displays two traces as shown in Fig. 2.2. Fig. 2.2 The student determines the phase difference θ between the two traces. The student repeats the experiment with different resistors. It is suggested that θ and R are related by the equation tan θ = 1 2πfCR where f is the frequency of the a.c. power supply. 1
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2(a)[1]
2(b)[2]
2(c)(i)[2]
2(c)(ii)[2]
2(c)(iii)[2]
2(d)[1]
2(e)(i)[2]
2(e)(ii)[1]
2(f)[2]
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