An electric bulb will glow only when the circuit ______.
Current flows through the circuit
Electric circuit is incomplete
Electric switch is open
All of these
A bulb in a circuit glows only when the circuit is complete and current is flowing. There can be a closed circuit with or without a switch.
If an electric switch is open then no current flows through the circuit.
What is an electric circuit? Will there be a flow of electric current in an open circuit? [2 MARKS]