1) If switch A is closed, which bulbs, if any, will switch on? a) A b) B c) Both d) None 2) If switch A and C are closed, which bulbs, if any, will switch on? a) A b) B c) Both d) None 3) If switch A and B are closed, which bulbs, if any, will switch on? a) A b) B c) Both d) None 4) If switch B and C are closed, which bulbs, if any, will switch on? a) A b) B c) Both d) None 5) Why must switch A be turned on for any of the bulbs to work? a) It allows electrons from the battery to start their journey. b) It is the switch nearest the battery c) It forms part of a complete circuit for bulbs A and B.

Switches in circuits - basic

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