Current-Carrying Wires in Magnetic Fields (HSC SSCE Physics): Flashcards

Force on current-carrying wire in magnetic field

Electrical potential energy to kinetic energy

$F = \ell IB\sin\theta$

$F = \ell IB$ (maximum)

$F = 0$ (no force)

Perpendicular to both current and magnetic field

Fingers: current; curl to field; thumb: force

$B = \frac{F}{\ell I\sin\theta}$

Oscillating current in coil creates oscillating force on cone

Magnetic force on current in projectile accelerates it