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Electromagnetic Induction
Physics · Chapter 10 · Units 3-4: Magnetic Effects of Current and Magnetism; Electromagnetic Induction and Alternating Currents
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Your path through this chapter
Visual lesson Beta
- Part 1: Flux, Faraday, Lenz and motional emf18 slides
- Part 2: Self-induction, mutual induction and the transformer19 slides
Flashcards Beta
30 cards for quick recall of key terms and facts.
Review the cards Step 3: Not startedPractice
73 board-style questions with instant checks: Numerical 19, Short answer 19, Multiple choice 16, Assertion and reason 6.
Practise Step 4: Not startedChapter test Free
Short and long chapter tests in board pattern, with results and analysis.
Step 5: Not started- Chapter test (long) — Electromagnetic Induction · 40 marks · 100 min
- Chapter test (short) — Electromagnetic Induction · 20 marks · 50 min
Topics 6
- Magnetic flux and its rate of change; Faraday's laws of electromagnetic induction
- Lenz's law and conservation of energy; motional emf E = Blv and power P = (Blv)^2/R
- Eddy currents: causes, effects and uses
- Self-induction: Phi = LI, E = -L dI/dt; the henry; self-inductance of a long solenoid; back emf
- Mutual induction: Phi2 = M I1, E2 = -M dI1/dt; mutual inductance of two coaxial solenoids
- Transformer (ideal coupling): principle, working, step-up and step-down, efficiency, energy losses and their reduction; power transmission