Electricity and Magnetism Pretest

Front

What are the basic parts of an electric current?

Back

The basic parts of an electric current include a power source (like a battery), a conductor (like a wire), and a load (like a light bulb).

Front

What is the term for the relationship between electricity and magnetism?

Back

The relationship between electricity and magnetism is called electromagnetism.

Front

What is an example of a conductor?

Back

An example of a conductor is a penny.

Front

What is the definition of Direct Current (DC)?

Back

Direct Current (DC) is an electric current that flows in only one direction.

Front

What device converts chemical energy into electrical energy?

Back

A battery converts chemical energy into electrical energy.

Front

What is the function of a transformer in an electric circuit?

Back

A transformer is used to change the voltage of an alternating current (AC) in a circuit.

Front

What is the difference between alternating current (AC) and direct current (DC)?

Back

Alternating current (AC) changes direction periodically, while direct current (DC) flows in one direction only.

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) of the conductor, expressed as V = IR.

Front

What is the unit of electric current?

Back

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

Front

What is the role of a resistor in an electric circuit?

Back

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