Question

When does a bulb glow in a circuit

Answer 1

Hey, mate here is your answer》》

If the light bulbs are connected in parallel, the current flowing through the light bulbs combine to form the current flowing in the battery, while the voltage drop is 6.0 V across each bulb and they all glow. In a series circuit, every device must function for the circuit to be complete.

Hope this answer will help you..《《

Answer 2

The bulb glows in a circuit when the circuit is complete.That is the key is closed,battery properly connected,bulb properly connected ...

hope it helps