HOW VOLTAGE IS INDUCED IN A COIL OF WIRE

Any change in the magnetic environment of a coil of wire will cause a voltage to be induced.

CHANGE COULD BE PRODUCED BY;

• Changing the magnetic field strength
• Moving a magnet toward or away from the coil
• Moving the coil into or out of the magnetic field

FARADAY'S LAW

• A formula
• Describes how potential difference is created
• How much is created

E=dB/dt

Untitled Slide

• E = value of voltage (EMF)
• dt = change in time
• dB = change in magnetic flux

The amount of voltage created is equal to the change in magnetic flux divided by the change in time

COILS

• More coils
• More voltage