Electricity and Magnetism-Unit Review

Front

What is an open circuit?

Back

An open circuit is a circuit that is not complete, meaning that electricity cannot flow through it.

Front

What is a closed circuit?

Back

A closed circuit is a complete circuit that allows electricity to flow freely.

Front

What causes an electric current in a wire?

Back

Electric current in a wire is caused by the flow of electrons due to electrical attraction and repulsion.

Front

What does the magnetic field represent?

Back

The magnetic field represents the area around a magnet where magnetic forces can be detected.

Front

What is the role of electrons in electricity?

Back

Electrons are negatively charged particles that flow through conductors to create electric current.

Front

What is a parallel circuit?

Back

A parallel circuit is a type of circuit where there are multiple paths for electricity to flow.

Front

What is the difference between a series circuit and a parallel circuit?

Back

In a series circuit, all components are connected in a single path, while in a parallel circuit, components are connected across multiple paths.

Front

What is electrical resistance?

Back

Electrical resistance is the opposition to the flow of electric current, measured in ohms.

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 a conductor?

Back

A conductor is a material that allows electricity to flow through it easily, such as copper or aluminum.