Physics · May / June 2025 · Paper 62 · Question 2
0625
As printed in the paper
The question as text
A student investigates a light-dependent resistor (LDR). The student assembles a series circuit consisting of a power supply, a switch, a 470 Ω resistor and an LDR.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
2(a)[1]
correct symbol only for the LDR chosen AND a series connection
2(b)(i)[1]
correct voltmeter symbol AND voltmeter connected in parallel with the resistor
2(b)(ii)[1]
0.8(0) (V)
2(c)[2]
I = 0.0017 ÷ 1.7 × 10–3
A / ampere / amps
2(d)[1]
RB = 1290 OR 1292 OR 1292.5 OR 1293 OR 1294 OR 1300 (Ω) OR 2.2 ‣ candidate’s (c)
2(e)(i)[1]
RD = 9086.6 OR 9086.7 OR 9087 OR 9090 OR 9100 (Ω)
2(e)(ii)[2]
reading / voltage / p.d. decreases (as the distance increases)
after 15 cm / from 20 cm the reading becomes constant
2(f)[2]
VXY + VYZ remains constant / values are nearly equal / increases
values quoted to confirm statement
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.