Lesson Plan

• Describe how a change in magnetic flux induces an emf in a conductor.
• Apply Faraday’s law to calculate the magnitude of induced emf for moving conductors and changing magnetic fields.
• Explain Lenz’s law and predict the direction of the induced current.
• Analyse how magnetic field strength, conductor length, speed, number of turns, area, and angle affect emf magnitude.
• Solve typical problems involving induced emf in straight conductors and coils.

• Projector or interactive whiteboard for diagrams and equations.
• Printed worksheet with practice problems and diagrams.
• Bar magnets, copper rod, and a power supply for a simple demonstration.
• Stopwatch and ruler to measure speed and length.
• Multimeter to measure induced voltage.
• Whiteboard and markers.

Start with a quick demonstration of a magnet passing through a coil that produces a visible spark, asking students what caused the spark. Connect this observation to prior learning about magnetic fields and electric circuits. State that by the end of the lesson they will be able to predict and calculate the emf generated when a conductor moves in a magnetic field or when the field changes.

1. Do‑now (5 min): Short written question on how magnetic flux can change.
2. Demonstration (10 min): Move a copper rod through a uniform magnetic field while measuring voltage with a multimeter.
3. Concept input (15 min): Explain Faraday’s law and Lenz’s law using slides and the suggested diagrams.
4. Guided practice (15 min): Solve Example 1 together, highlighting the role of B, L, v, and θ.
5. Collaborative activity (10 min): Groups work on worksheet problems (Examples 2 & 3) and check each other’s answers.
6. Misconception check (5 min): Clicker quiz addressing common misconceptions listed in the notes.
7. Summary & exit ticket (5 min): Students write one sentence summarising how emf is produced and answer a numeric exit question.

Recap the two ways flux can change and how Faraday’s and Lenz’s laws quantify and direct the induced emf. Collect the exit tickets to assess understanding, and assign a homework sheet with three additional problems on moving conductors and changing fields.