Notes 17.1 & 17.2: Electricity, Magnetism and Motors

In 1819, Hans Oersted discovered that magnetism is created by a flowing electrical current.

You can use the right-hand rule to determine the direction of the magnetic field or current flow.

Magnetism is created by moving charges. The strength of the field near the wire depends on: Current-greater current, stronger magnetic field Distance – the farther away from the wire the weaker the field

Electric current can create magnetism, so it makes sense that magnetism can generate electric current Induction:

Electric Motor: Converts electrical energy into mechanical energy. Electrical motors contain: Permanent magnets Solenoids Current source