Question

Fill in the blanks.
1. ____________ are the materials which allow electric current to pass through them.
2. Flow of electricity through a closed circuit is ____________.
3. ____________ is the device used to close or open an electric circuit.

Answer 1

1. Conductors : Conductors are the material which allows current to pass through them. Metals are good conductors of electricity. Conductors allow electricity to easily flow through them as electrons can move easily inside them when electricity is passed through them.
2. A complete electric circuit : The flow of electricity through a closed circuit is a complete electric circuit. In a closed-circuit electrical current flows or circulates within it. There is no interruption in the path.

3. Key or Switch : The switch is a device used to close and open an electric circuit. It controls the opening or closing of an electric circuit. It allows control over current flow within a circuit.