-The UK mains supply is around 230V
-Mains Electricity is produced by generators, using electromagnetic induction
-The AC supply means that the current is constantly changing direction
-DC is used by batteries, meaning that the current only flows one way i.e in the same direction
-AC is used for mains electricity as it is easy to generate and can be distributed more efficiently
Inducing a voltage:
Moving a magnet in or near a coil of wire can create a voltage and maybe a current in a conductor.
The magnetic field through the coil changes as the magnet is moved.
The change in magnetic field induces a voltage, allowing a current to flow through the wire, if it's part of a complete circuit
The direction of the voltage depends on which way you move the magnet:
-Moving the magnetic into the coil induces a voltage in the opposite direction from when you move it out of the coil
-Reversing the magnet's North-South polarity. If the opposite pole is pointed into the coil, the voltage induced is in the opposite direction.
These generate electricity.
Within a generator, a magnet rotates in a coil of wire, and as the magnetic turns, the magnetic field within the coil changes. The change in magnetic field…