Unit 9 Review

Front

What is a conductor?

Back

A conductor is a material that allows electric current to flow freely through it.

Front

What is an insulator?

Back

An insulator is a material that does not allow electric current to flow freely.

Front

How does a conductor differ from an insulator?

Back

In a conductor, electric current can flow freely; in an insulator, it cannot flow freely.

Front

What is the function of a resistor in a circuit?

Back

A resistor limits the flow of electric current in a circuit.

Front

What is the purpose of a switch in an electrical circuit?

Back

A switch is used to open or close a circuit, controlling the flow of electricity.

Front

What happens when a lightbulb is connected in a closed circuit?

Back

The lightbulb will turn on.

Front

What is the effect of a magnetic field on a moving charge?

Back

A moving charge experiences a force when it is near a magnetic field.

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R). Formula: V = I * R.

Front

What is the unit of electric current?

Back

The unit of electric current is the Ampere (A).

Front

What is the unit of resistance?

Back

The unit of resistance is the Ohm (Ω).