Physics · May / June 2024 · Paper 62 · Question 2
0625
As printed in the paper
The question as text
A student investigates the resistance R of a diode using the circuit shown in Fig. 2.1. V A X – + Y 10 Fig. 2.1
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2(a)[2]
V = 0.84 (V)
I = 0.36 (A)
2(b)[2]
2.3(3......)
2.3 (Ω)
2(c)[2]
3.1 (Ω)
0.18 (A)
2(d)(i)[1]
as the current decreases the potential difference / voltage across the diode remains (fairly) constant / decreases (slightly)
2(d)(ii)[1]
as the current decreases the resistance increases
2(e)[1]
diode / power supply / ammeter connected:
the wrong way around / flipped / in the wrong direction
2(f)[1]
variable resistor and correct symbol
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