Lesson Plan

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Lesson Plan
Grade: Date: 17/01/2026
Subject: Physics
Lesson Topic: Describe an experiment to demonstrate electromagnetic induction
Learning Objective/s:
  • Describe the experimental setup that demonstrates electromagnetic induction.
  • Explain how Faraday’s and Lenz’s laws account for the observed galvanometer deflections.
  • Analyse the effect of variables (speed, coil turns, magnet polarity) on the magnitude of induced emf.
  • Predict outcomes when modifying the experiment, such as rotating the coil.
Materials Needed:
  • Copper wire coil (≈100 turns)
  • Strong bar magnet
  • Galvanometer or sensitive ammeter
  • Connecting wires with crocodile clips
  • Ruler or measuring scale
  • Stopwatch (optional)
  • Safety goggles (optional)
 Introduction:
Begin with a quick demonstration of a magnet moving through a coil to spark curiosity about invisible electricity. Review prior knowledge of magnetic fields and voltage. State that today’s success criteria are to design the experiment, interpret the galvanometer readings, and link them to Faraday’s and Lenz’s laws.
Lesson Structure:
  1. Do‑now (5'): Students answer a short question on magnetic flux and induced voltage.
  2. Mini‑lecture (10'): Recap Faraday’s law and Lenz’s law with everyday examples.
  3. Demonstration (5'): Teacher shows the magnet‑coil set‑up and predicts needle movement.
  4. Guided lab (20'): Students assemble the apparatus, record galvanometer deflections for fast and slow insertions, and note direction changes.
  5. Data analysis (10'): Groups compare results, discuss how speed, coil turns, and polarity affect emf.
  6. Extension discussion (5'): Relate findings to the operation of an electric generator.
  7. Check for understanding (5'): Exit‑ticket question – “What would happen to the induced emf if the coil were rotated instead of moving the magnet?”
Conclusion:
Recap the key observations and how they illustrate Faraday’s and Lenz’s laws. Collect exit tickets to gauge understanding and assign a brief homework: students sketch a modified experiment (e.g., rotating coil) and predict the emf change.