Chapter 9: Electricity & Magnetism

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It typically consists of a coil of wire wrapped around a core material, such as iron.

Front

How can you strengthen an electromagnet?

Back

You can strengthen an electromagnet by adding more coils of wire around the core or increasing the electric current flowing through the wire.

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical loop that allows current to flow. All components are connected without any breaks.

Front

What is a series circuit?

Back

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

Front

What is a parallel circuit?

Back

A parallel circuit is a type of electrical circuit where components are connected across common points or junctions, allowing current to flow through multiple paths.

Front

What is current in electricity?

Back

Current is the flow of electric charge in a circuit, measured in amperes (A). It represents how much charge is flowing per unit time.

Front

What is voltage?

Back

Voltage, also known as electric potential difference, is the measure of the energy per unit charge available to drive the flow of current in a circuit, measured in volts (V).

Front

What is resistance?

Back

Resistance is the opposition to the flow of electric current in a circuit, measured in ohms (Ω). It determines how much current will flow for a given voltage.

Front

What is static electricity?

Back

Static electricity is the buildup of electric charges on the surface of objects, often caused by friction. It can result in sparks or shocks when the charges are discharged.

Front

What is a magnetic field?

Back

A magnetic field is the region around a magnet where magnetic forces can be detected. It is represented by field lines that show the direction and strength of the magnetic force.