Physics (AS & A Level) · Feb / March 2025 · Paper 22 · Question 6
9702
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A cylindrical copper wire P of length 0.24 m is shown in Fig. 6.1. 0.24 m 0.85 A Fig. 6.1 (not to scale) The current in the wire is 0.85 A. The resistance of the wire is 3.3 mΩ. The total number of charge carriers N in the wire is 2.6 × 1022. The resistivity of copper is 1.8 × 10–8 Ω m.
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6(a)[2]
6(b)(i)[2]
6(b)(ii)[1]
6(b)(iii)[2]
6(c)(i)[4]
6(c)(ii)[2]
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