• Can we create electricity from a magnetic field?

Electromagnetic Induction

Electromagnetic Induction

• Electric current can be created using a magnet by 2 different methods:

• 1. By moving a conductor inside of a magnetic field.

• 2. By moving a magnet around a conductor.

Therefore, by using magnets you can control the current in your circuit.

Different Types of Switches

Electrical Function

• The function that an electrical switch fulfills is called control.

• The purpose of a control is to open and close an electric circuit.

Forms of switches.

• All of these are binary, meaning they are either completely on (contact made) or completely off (contact broken).

• Rocker switch, ex: power bar switch

• Toggle switch, ex: light switch

• Push-button switch, ex: power button on most appliances

• Magnetic contact switch, ex: alarm system, the magnet is pulled away from the switch when the door opens and the alarm goes off.

Could you figure it out?

Types of Switches

Your task

• Circuit design: – Create a circuit that contains the following

elements: • 4 light bulbs each controlled separately. • A resistor • Only 2 switches.

• You may work with a partner. • Draw your circuit on a loose leaf and hand it in.