Electricity and Magnetism Test Review

Front

What is a series circuit?

Back

A series circuit is a type of electrical circuit where the same current flows through all components, and there is only one path for the current to take.

Front

What is voltage difference?

Back

Voltage difference is the force or push that causes electric charges to move in a circuit.

Front

What factors affect the resistance of a wire?

Back

The resistance of a wire can be affected by its material, length, and cross-sectional area.

Front

What is a fuse?

Back

A fuse is a safety device that contains a small piece of metal that melts if the circuit overheats, breaking the circuit and stopping the flow of current.

Front

What instrument is used to measure current in a circuit?

Back

An ammeter is used to measure the current flowing through a circuit.

Front

What is the role of a circuit breaker?

Back

A circuit breaker is a safety device that automatically interrupts the flow of electricity in a circuit when it detects an overload or short circuit.

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. It is expressed as V = I × R.

Front

What is the difference between AC and DC?

Back

AC (Alternating Current) is an electric current that reverses direction periodically, while DC (Direct Current) flows in one direction only.

Front

What is an insulator?

Back

An insulator is a material that does not allow electric charges to flow freely, preventing the flow of current.

Front

What is a conductor?

Back

A conductor is a material that allows electric charges to flow freely, facilitating the flow of current.