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# Electromagnetic Induction

## Passing a loop of wire around a magnetic field can generate electrical current in the loop.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
• Video

## How It's Made Induction Cooktops

by CK-12 //basic
A great video that shows how induction cooktops are made, courtesy of Discovery / Science Channel
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• Video

## Introduction to Electromagnetic Induction - Overview

by CK-12 //basic
Overview
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• Video

## Motional EMF - Overview

by CK-12 //basic
Overview
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• Video

## Faraday's Law: Magnitude of Induced Current - Overview

by CK-12 //basic
Overview
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• Video

## Lenz's Law: Direction of the Induced Current - Overview

by CK-12 //basic
Overview
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• Video

## Introduction to Electromagnetic Induction - Example 1

by CK-12 //basic
Determining whether or not a current will be induced in a circuit given a scenario
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• Video

## Introduction to Electromagnetic Induction - Example 2

by CK-12 //basic
Determining the effect of changing the angle between a magnetic field and a circuit on the induced voltage and current
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• Video

## Introduction to Electromagnetic Induction - Example 3

by CK-12 //basic
Determining the effect of changing the number of magnetic field lines on the induced voltage and current
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• Video

## Motional EMF - Example 1

by CK-12 //basic
Determining the effect of changing the velocity, the length of wire, and the strength of the magnetic field on the induced voltage and current
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• Video

## Motional EMF - Example 2

by CK-12 //basic
Solving problems involving motional emf using the equation emf = vBl
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• Video

## Faraday's Law: Magnitude of Induced Current - Example 3

by CK-12 //basic
Determining the magnitude of induced current using the equation I = emf / R
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• Video

## Lenz's Law: Direction of the Induced Current - Example 1

by CK-12 //basic
Determining the direction of induced current by applying Lenz's law
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• Video

## Faraday's Law: Magnitude of Induced Current - Example 1

by CK-12 //basic
Determining the magnetic flux through a circuit using the equation Φ[B ]= ABcosθ
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• Video

## Faraday's Law: Magnitude of Induced Current - Example 2

by CK-12 //basic
Solving problems involving Faraday's law and the magnitude of induced emf using the equation emf = -NΔϕ[M]/Δt = -NΔ
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