Electromagnetic Induction

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Lesson Plan →Objectives, pacing and practice, built from this lesson's brief.
Guided Notes →One page your students fill in and keep.
Exit Ticket →Three items at the end of class. No student accounts.
Re-teach →After an exit ticket: who missed what, and what to do tomorrow.
Homework →Assign practice; it grades itself.

20.2

"Faraday's law of induction states that the induced EMF in a coil is equal to the negative of the rate of change of magnetic flux through the coil: ε = −ΔΦ_B/Δt." "Lenz's law states that the induced EMF is in a direction that opposes the change in flux that caused it."

"Faraday's law of induction states that the induced EMF in a coil is equal to the negative of the rate of change of magnetic flux through the coil: ε = −ΔΦ_B/Δt."
"Lenz's law states that the induced EMF is in a direction that opposes the change in flux that caused it."

What you'll learn

State Faraday's Law and explain what electromagnetic induction is
Define magnetic flux and calculate it for a surface in a magnetic field
Apply Lenz's Law to determine the direction of an induced current
Explain qualitatively how EMF depends on the rate of change of magnetic flux
Describe the conditions necessary for electromagnetic induction to occur
Connect Faraday's Law to the operation of generators, transformers, and wireless charging

Review first:

Magnetic Fields, Field Lines, and Force

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Electromagnetic induction

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