A-LevelPhysicsD.C. circuits9702/12 · Oct/Nov 2021 · Q371 Mark

A battery of negligible internal resistance is connected to three resistors, as shown. [Figure 37.1] The potential difference across each resistor is 2 V. The current from the battery is 0.4 A and the current through one of the resistors connected in parallel is 0.3 A. What is the current through the other resistor connected in parallel and what is the electromotive force (e.m.f.) of the battery?

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Acurrent/A: 0.1, e.m.f./V: 4

Bcurrent/A: 0.3, e.m.f./V: 4

Ccurrent/A: 0.1, e.m.f./V: 6

Dcurrent/A: 0.3, e.m.f./V: 6

✓ Correct answer

A: current/A: 0.1, e.m.f./V: 4

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Topic: D.C. circuits, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2021 Paper 1 Variant 2, question 37.

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