Lesson Plan

Resources → Subject Notes → Physics → Notes
Lesson Plan
Grade: Date: 01/12/2025
Subject: Physics
Lesson Topic: recall and use Faraday’s and Lenz’s laws of electromagnetic induction
Learning Objective/s:
  • Describe magnetic flux and its relationship to induced emf.
  • Apply Faraday’s law to calculate emf for moving conductors, rotating coils, and changing magnetic fields.
  • Use Lenz’s law and the right‑hand rule to determine the direction of induced current.
  • Analyse real‑world devices such as generators and transformers using these principles.
Materials Needed:
  • Projector and screen
  • Whiteboard and markers
  • Printed worksheet with practice questions
  • Demonstration set: rectangular loop, strong bar magnet, ruler, stand
  • Calculators
  • Laptop with PhET electromagnetic induction simulation
 Introduction:
Imagine a metal ring that jumps off a magnetic core the instant the circuit is switched on. Students already know magnetic fields and basic circuit concepts, so we will connect that knowledge to changing flux. By the end of the lesson they will be able to predict both the magnitude and direction of induced emf in common situations.
Lesson Structure:
  1. Do‑now (5') – Quick quiz on magnetic flux definitions and units.
  2. Mini‑lecture (10') – Derive Faraday’s law, introduce Lenz’s law and demonstrate the right‑hand rule.
  3. Demonstration (10') – Loop entering a uniform magnetic field; students predict emf direction before observation.
  4. Guided practice (15') – Work through the textbook example and a similar problem in pairs.
  5. Interactive simulation (10') – PhET activity varying speed, field strength, number of turns and observing emf.
  6. Practice questions (15') – Solve three exam‑style problems; teacher circulates to check reasoning.
  7. Check for understanding (5') – Exit ticket: one sentence summarising Lenz’s law.
Conclusion:
We recap how a changing magnetic flux induces an emf and how Lenz’s law dictates its direction, reinforcing the link to energy conservation. Exit tickets are collected to gauge understanding, and for homework students complete a worksheet with two additional induction problems to solidify calculation skills.