Moving charges in a magnetic field (AQA A-Level Physics): Flashcards

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Moving charges in a magnetic field
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Force on charge QQ moving at vv perpendicular to field BB

F=BQvF = BQv

Fleming's Left-Hand Rule: Thumb direction

Motion (or force)

Fleming's Left-Hand Rule: First finger direction

Field

Fleming's Left-Hand Rule: Second finger direction

Conventional Current

Path of charged particle in magnetic field

Circular

Radius of circular path formula

r=mvBQr = \frac{mv}{BQ}

Magnetic force acts as _____ in circular motion

Centripetal force

Device accelerating charged particles using magnetic field

Cyclotron

Semi-circular electrodes in cyclotron

Dees

Effect of magnetic field on particle speed in cyclotron

No effect (only changes direction)

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Fields & Their Consequences

Fields

Gravitational fields

Electric fields

Capacitance

Magnetic fields

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Fields & Their Consequences

Fields

Gravitational fields

Electric fields

Capacitance

Magnetic fields

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Fields & Their Consequences

Fields

Gravitational fields

Electric fields

Capacitance

Magnetic fields

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Fields & Their Consequences

Fields

Gravitational fields

Electric fields

Capacitance

Magnetic fields

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