Physics · May / June 2024 · Paper 41 · Question 7
0625
As printed in the paper
The question as text
The electromotive force (e.m.f.) of a battery is 7.5 V.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
7(a)[2]
(electrical) work done moving a unit charge around a (complete) circuit
work done AND moving a charge (in a circuit)
7(b)(i)[3]
correct symbols for five cells in series
correct symbols for variable resistor AND fixed resistor
cells, variable resistor and fixed resistor connected in series
7(b)(ii)[4]
curve with negative gradient of decreasing magnitude from 0 Ω to 150 Ω AND does not reach the x-axis
curve / line with negative gradient from 0 Ω to 150 Ω
y-axis labelled 0.25 where candidate’s line meets the y-axis OR the mark on the y-axis labelled 0.25
R = V / I OR (Imax =) V / R OR 7.5 / 30
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