Physics P3 - Electromagnetic Force and Induction

• Electromagnetic force is the force experienced by a wire when it is put into a magnetic field.
• It is also called the motor effect.

The force acting on the wire in the motor effect is increased when;

• A stronger magnet is used.
• The current is increased

The force can also be reversed if;

• The current is reversed.
• The magnet is reversed.

• Electromagnetic induction is when a potential difference is induced when a wire cuts through a magnetic field.
• This is also called the generator effect.

The p.d is increased when;

• There are more turns on the coil
• The magnet is replaced by a stronger one.

The p.d is reversed if;

• The poles were swopped around.