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13 results for “magnetic”

Formulae (13)

\varepsilon = -\frac{d\Phi_B}{dt}

A changing magnetic flux induces an electromotive force.

\oint \vec{B} \cdot d\vec{l} = \mu_0 I

A magnetic field circulates around an electric current.

\varepsilon = -\frac{d\Phi_B}{dt}

A changing magnetic flux induces an EMF.

F = qvB\sin\theta

Force on a moving charge in a magnetic field.

F = BIL\sin\theta

Force on a current-carrying conductor.

B = \frac{\mu_0 I}{2\pi r}

Magnetic field around a long straight wire.

B = \mu_0 n I

Magnetic field inside an ideal solenoid.

\mathcal{E} = -N\frac{d\Phi_B}{dt}

Induced EMF from changing magnetic flux.

\Phi_B = BA\cos\theta

Flux through a surface in a magnetic field.

f = \frac{qB}{2\pi m}

Rotation frequency of a charge in a magnetic field.

E = \tfrac{1}{2}LI^2

Energy stored in a magnetic field.

E = \frac{1}{2}LI^2

Energy stored in an inductor magnetic field.

f_1 \approx \frac{c}{2\pi R_E}

Fundamental electromagnetic resonance of the Earth.