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."
Show moreShow less
"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
Prerequisites
Slides
Interactive presentations perfect for visual learners • Interactive presentation
Slide Video
Watch narrated slides play like a video lesson • Narrated slide playback
Task-sets
Learning resource • 1 task-sets