Electromagnetic induction (AQA A-Level Physics): Flashcards

Relative motion between a conductor and a magnetic field

Induced emf = rate of change of magnetic flux linkage

Induced current opposes the change in magnetic flux

$\varepsilon = N \frac{\Delta \Phi}{\Delta t}$

$\varepsilon = Blv$

Number of turns in the coil

Falls slower due to opposing forces from induced currents

Conservation of energy

$N\Phi = BAN\cos(\omega t)$

$\varepsilon = BAN\omega\sin(\omega t)$