A-LevelPhysicsD.C. circuitsMay/June 2021Paper 2 Q511 Marks
A battery has electromotive force (e.m.f.) 4.0V and internal resistance 0.35Ω. The battery is connected to a uniform resistance wire XY and a fixed resistor of resistance R, as shown in Fig. 5.1. [Figure 5.1] Wire XY has resistance 0.90 Ω. The potential difference across wire XY is 1.8V. A cell of e.m.f. 1.2V is connected to the circuit in (b), as shown in Fig. 5.2. [Figure 5.2] The connection P is moved along the wire XY. The galvanometer reading is zero when distance XP is 0.30 m.
✓ Correct Answer
The correct answer is —. This question tests the candidate's understanding of d.c. circuits within the Physicssyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep