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Electromagnetic Induction • Can we create electricity from a magnetic field? 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.