Physics · Oct / Nov 2023 · Paper 62 · Question 2
0625
As printed in the paper
The question as text
A student investigates the resistance of a wire. Fig. 2.1 shows the circuit used. resistance wire sliding contact S C B l A V Fig. 2.1
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
2(a)(i)[1]
I = 0.34 (A)
2(a)(ii)[1]
V = 1.2 (V)
2(b)(i)[2]
R values correct
all R given to a consistent 2 or all to a consistent 3 significant figures
2(b)(ii)[1]
cm, V, Ω
2(c)[4]
axes labelled with quantity and unit
suitable scales (occupying at least ½ the grid)
plots correct to ± ½ small square and precise plots
(triangle) method shown clearly on graph using at least ½ of candidate’s line between extreme plots – either ΔR ⩾ 1.5 good best-fit line judgement, thin, continuous line
or ΔV ⩾ 0.6
2(d)[2]
gradient = 2.8 to 3.2 inclusive
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.