Physics · May / June 2021 · Paper 62 · Question 3
0625
As printed in the paper
The question as text
A student investigates resistance. Fig. 3.1 shows the circuit used. power supply A V resistance wire sliding contact S D B C l R Fig. 3.1
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
3(a)(i)[2]
V1 = 0.6(0) (V)
I1 = 0.32 (A)
3(a)(ii)[2]
R1 = 1.875 (Ω)
Units Ω, V, A, all correct
3(b)[4]
graph:
axes correctly labelled with quantity and unit and right way round
suitable scales
all plots correct to 1
2 small square
good line judgement, thin, continuous line
3(c)[2]
method shown clearly on graph
l correctly read to ± 1
2 small square
3(d)[1]
5.5–6.5 (Ω) inclusive
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