Physics · May / June 2020 · Paper 61 · Question 2
0625
As printed in the paper
The question as text
A student determines the resistances of some filament lamps. Fig. 2.1 shows the first circuit she uses. A V power supply L1 Fig. 2.1
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
2(a)(i)[1]
V1 = 3.5
2(a)(ii)[1]
I1 = 0.38
2(a)(iii)[2]
R1 = 9.21 (ecf allowed)
Unit Ω
2(b)[1]
R2 = 5.7 and R3 = 4.6, with consistent 2 sf
2(c)[1]
Total R = 20
2(d)[2]
Statement matches readings (Expect B)
Justification with suitable numbers quoted
2(e)[3]
Three lamps in series, correct symbol
Voltmeter across lamp L3
Other symbols and circuit correct
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