Question

In a circuit, what is responsible for lighting a bulb?

1. flow of neutrons

2. flow of protons

3. flow of electrons

4. flow of photons​

Answer 1

3

Step-by-step explanation:

The flow of electrons. A current means the flow of electrons and without a current there would be no electricity therefore the bulb would not light up.

Answer 2

3) flow of electrons, if im correct