2 What does a switch do in a circuit? 1. How can you improve the circuit you connected to make it more convenient to use? 2. What electrical appliances at your home have switches? What are these switches for?
More to Explore Use a buzzer to replace the light bulb with a holder in the closed circuit. See whether the buzzer can make sounds or not.
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Activity Booklet 22 3. Add this switch to a circuit. Then, open and close the switch to see how it controls the bulb to light up or not.
Listen to your teacherÕs instructions when you
assemble circuit components. When there is overheating in circuits, disconnect them at once and tell your teacher.
4. Make a switch and add it to the circuit you connected in Activity 21 . Activity Booklet 23
Quick Check Electrical appliances may use switches to control the operation of circuits. When the switch is open, it connects / disconnects the circuit. When the switch is closed, it connects / disconnects the circuit.
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