Physics (AS & A Level) · Oct / Nov 2021 · Paper 22 · Question 2
9702
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A charged oil drop is in a vacuum between two horizontal metal plates. A uniform electric field is produced between the plates by applying a potential difference of 1340 V across them, as shown in Fig. 2.1. top metal plate bottom metal plate uniform electric field oil drop, weight 4.6 × 10–14 N 1.4 × 10–2 m + 1340 V 0 V Fig. 2.1 The separation of the plates is 1.4 × 10–2 m. The oil drop of weight 4.6 × 10–14 N remains stationary at a point mid-way between the plates.
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2(a)(i)[2]
2(a)(ii)[3]
2(b)(i)[2]
2(b)(ii)[1]
2(b)(iii)[2]
2(b)(iv)[2]
2(c)[2]
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