Chapter 8- Magnetism and Electricity

Front

What is the definition of a parallel circuit?

Back

A parallel circuit is a type of electrical circuit that has more than one pathway for electricity to flow.

Front

What is the definition of a series circuit?

Back

A series circuit is a type of electrical circuit in which the components are connected end-to-end, so that the current flows through each component in turn.

Front

What safety precautions should be taken during a lightning storm?

Back

During a lightning storm, you should avoid standing under trees, as they can attract lightning.

Front

What is a generator?

Back

A generator is a machine that converts mechanical energy into electrical energy, producing electricity.

Front

What is the relationship between electricity and magnetism?

Back

Electricity and magnetism are interrelated; electric currents produce magnetic fields, and changing magnetic fields can induce electric currents.

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 function of a circuit breaker?

Back

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

Front

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

Back

Direct current (DC) flows in one direction, while alternating current (AC) changes direction periodically.

Front

What is the role of a resistor in a circuit?

Back

A resistor is a component that resists the flow of electric current, thereby controlling the amount of current that can flow through the circuit.