Torque on a Current Loop and the Moving Coil Galvanometer

Physics · Chapter 8 · Units 3-4: Magnetic Effects of Current and Magnetism; Electromagnetic Induction and Alternating Currents

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Visual lesson Beta
1. Part 1: Torque, magnetic moment and the loop as a dipole16 slides
2. Part 2: The moving coil galvanometer, ammeter and voltmeter17 slides
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Notes Beta
5 sections with key terms, formulas and exam tips.
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30 cards for quick recall of key terms and facts.
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72 board-style questions with instant checks: Numerical 22, Short answer 17, Multiple choice 16, Assertion and reason 7.
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Chapter test Free
Short and long chapter tests in board pattern, with results and analysis.
- Chapter test (long) — Torque on a Current Loop and the Moving Coil Galvanometer · 40 marks · 100 min
- Chapter test (short) — Torque on a Current Loop and the Moving Coil Galvanometer · 20 marks · 50 min
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Torque on a current loop in a uniform field: tau = NIAB sin(theta) = m x B; magnetic dipole moment m = NIA
Current loop as a magnetic dipole; orbital magnetic moment of the electron in the Bohr model
Moving coil galvanometer: radial field, construction, principle, working, I = k theta; current and voltage sensitivity
Conversion of a galvanometer into an ammeter (shunt) and a voltmeter of given range