O-LevelPhysicsElectricityOct/Nov 2025Paper 1 Q331 Mark
A cardboard tube has two wires, P and Q, connected to its ends. Inside the tube, wire P and wire Q are connected to two resistors. The potential difference (p.d.) between wire P and wire Q is 9.0 V and the current in the wires is 0.75 A. [Figure 33.1] Which combination of resistors is inside the tube?
A0.75 Ω resistor and a 6.0 Ω resistor in parallel
B0.75 Ω resistor and a 6.0 Ω resistor in series
C20 Ω resistor and a 30 Ω resistor in parallel
D20 Ω resistor and a 30 Ω resistor in series
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The correct answer is C. This question tests the candidate's understanding of electricity within the Physicssyllabus. The examiner's mark scheme requires...
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