Induced Potential
If a wire is moved up through a magnetic field then a potential difference is induced across the ends of the wire but the potential difference is stopped when it stops moving, however if the wire is moved back down (the opposite direction) then the potential difference is induce again but in a reversed direction. If it is a complete circuit a current is induced
The size of the induced potential difference an current are dependant on:
- The size of the magnetic field
- The velocity of the wire
- And the number of turns in the wire
You can also move a magnet through a coil to induce a potential difference and current. When this is done the magnetic field of the induced current opposes the movement of the magnet.