Physics (AS & A Level) · May / June 2018 · Paper 52 · Question 2
9702
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The question as text
A student is investigating the charging of a capacitor. A circuit is set up as shown in Fig. 2.1. V P Q C E Fig. 2.1 The capacitor is initially discharged. A resistor of resistance R is connected between P and Q. When the switch is closed, the time t for the voltmeter reading to increase to a specific value V is measured. The capacitor is then discharged. The experiment is repeated with a different number n of resistors each of resistance R connected in series between P and Q. It is suggested that t and n are related by the equation E V 1 e nRC t - = - J L KK N P OO where E is the electromotive force (e.m.f.) of the power supply and C is the capacitance of the capacitor.
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2(a)[1]
2(b)[2]
2(c)(i)[2]
2(c)(ii)[2]
2(c)(iii)[2]
2(d)(i)[3]
2(d)(ii)[1]
2(e)[2]
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