Electromagnetic Induction: If a wire is passed across a magnetic field/changing magnetic field, a small EMF is induced and can be detected by a galvanometer.
The direction of an induced EMF opposes the change causing it.
An induced EMF can be increased by:
moving the wire faster
using a stronger magnet
Increasing length of wire in magnetic field, e.g. looping the wire through the field several times.
The current and EMF direction can be reversed by:
moving the wire in the opposite direction
turning the magnet round so that the field direction is reversed
Fleming’s right-hand rule gives the current direction
