Available practice: 76 of 80 marks. Parts 10(c) await marking support. Scores cover available parts only. Theory: answer each printed part. For drawings, upload a clear photo of your sketch on the supplied figure; show working and units for calculations.
Fig. 6.1 shows a circuit containing a filament lamp, a resistor R, a 12 V battery and five meters.
(a)(i)In Fig. 6.1 ammeter A₁ reads 0.25 A and voltmeter V₁ reads 3.0 V. Determine readings on A₂, A₃ and V₂.
Answer guidance
Determine Work it out from what you are given or from the figure, and show how you got there.
[2 marks]
(a)(ii)Using Fig. 6.1 and those meter readings, calculate resistance R.
Answer guidance
Using You must use the thing it names. An answer that reaches the right value another way may not score.
[2 marks]
(a)(iii)Resistor R obeys Ohm’s law. State Ohm’s law.
Answer guidance
State A short answer. No explanation is needed, and adding one cannot earn extra marks.
[2 marks]
(b)The battery in Fig. 6.1 is replaced. Fig. 6.2 shows the filament lamp’s current–voltage graph. Lamp voltage rises to 6.0 V. Use the graph and R to determine the new battery e.m.f.; show working.
Answer guidance
Using You must use the thing it names. An answer that reaches the right value another way may not score.
[3 marks]
5054/22/M/J/23Cambridge O Level Physics 5054 · May/June 2023 · Paper 2 variant 2 · Question 6