Physics · May / June 2024 · Paper 61 · Question 2
0625
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The question as text
A student investigates the resistance of a wire. Fig. 2.1 shows the circuit used. A V B C sliding contact S resistance wire d Fig. 2.1
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2(a)(i)[2]
I = 0.36
V50 = 1.4
2(a)(ii)[2]
R50 = 3.9 / 3.89 (Ω)
units A, V seen correctly used in (i)
2(a)(iii)[2]
r1 = 0.078
unit Ω / cm
2(b)(i)[2]
statement to match results
justification to match statement and results.
2(b)(ii)[2]
at least three additional values
all values quoted are more than 0 and up to 100 cm
2(c)[1]
correct symbol for variable resistor
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