May/June 2026 Paper 13

2026 · 40 questions · 40 parts · 40 marks

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34Current Potential DifferenceHard1 mark
A straight copper wire, of diameter m, has a number density of free electrons of m. In a given time interval, a charge of 0.15 C moves through the wire.
What is the average displacement of the free electrons along the wire in this time interval?