Electromagnetic Induction

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Electromagnetic Induction

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10 Terms

1

Electromagnetic Induction

The process where a conductor moving through a magnetic field induces an electromotive force (EMF).

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2

Motional EMF

The induced EMF in a conductor moving through a magnetic field, given by ε=BvL.

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3

Magnetic Flux (Φ)

The total magnetic field moving through an area A at an angle, quantified as magnetic flux.

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4

Faraday’s Law

The induced EMF in a circuit is equal to the negative rate of change of magnetic flux through the circuit.

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5

Lenz’s Law

The direction of the induced EMF and current opposes the change in magnetic flux that produced it, conserving energy.

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6

Alternating Current (AC)

Current that changes direction periodically, produced by an AC generator through electromagnetic induction.

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7

Root Mean Square (RMS) Values

Measure of equivalent steady DC values in an AC circuit, given by RMS = peak value / √2.

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8

Transformer

Device changing AC voltage levels without altering frequency through electromagnetic induction, consisting of primary and secondary coils.

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9

Diode Bridges

Convert AC to DC; half-wave rectification uses one diode, while full-wave rectification uses a bridge rectifier.

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10

Capacitance (C)

The ability of a system to store charge per unit voltage, defined as C=q/V, with the unit farad (F).

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