Unit 4 lesson 10 science quick check

Answer 1

1. What is an electric current?

An electric current is the flow of electric charge through a conductor, such as a wire.

2. What is the unit of measurement for electric current?

The unit of measurement for electric current is the ampere (A).

3. What is the difference between a conductor and an insulator?

A conductor is a material that allows electric current to flow through it easily, while an insulator is a material that does not allow electric current to flow through it easily.

4. How does a circuit work?

A circuit is a closed loop that allows electric current to flow through it. The current flows from a power source, such as a battery, through the wires of the circuit and any components (such as light bulbs or motors) before returning to the power source.

5. What is the main function of a switch in a circuit?

A switch in a circuit controls the flow of electric current. When the switch is closed, the circuit is complete and current can flow. When the switch is open, the circuit is broken and current cannot flow.