Question

why does the bulb light up when you close the switch

Answer 1

Answer:

When we close the circuit it connects a path for electricity to flow, thus making the bulb glow. If we open it, aur is between the path, as it's a bad conductor the electricity doesn't flow.

Explanation:

hope this helps u..

Answer 2

Answer:

a) The switch produces electricity. b) Closing the switch completes the circuit. c) Closing the switch breaks the circuit.