Physics

Magnetism and induction

Magnetic forces, magnetic flux and Faraday's law.

Physics

Lorentz force

F = qvB sin α→
Physics

Ampere force

F = BIl sin α→
Physics

Magnetic flux

Φ = BS cos α→
Physics

Induced EMF

|ε| = N|ΔΦ| / Δt→
Physics

Magnetic field of a straight current-carrying wire

B = μ₀I/(2πr)→
Physics

Magnetic field at the center of a circular loop

B = μ₀I/(2R)→
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Solenoid magnetic field

B = μ₀nI→
Physics

Charged-particle radius in a magnetic field

r = mv/(qB)→
Physics

Charged-particle period in a magnetic field

T = 2πm/(qB)→
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Torque on a current loop

M = BIS sin α→
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Force between parallel current-carrying wires

F = μ₀I₁I₂l/(2πr)→
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Faraday EMF for a single turn

|ε| = |ΔΦ|/Δt→
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Magnetic field energy of an inductor

W = LI²/2→
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Self-induction EMF

|ε| = L|ΔI|/Δt→
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Motional EMF

ε = Blv sin α→
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Solenoid inductance

L = μ₀μN²S/l→
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Coil flux linkage

Ψ = NΦ→