Electricity and Magnetism

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What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It consists of a coil of wire, often wrapped around a core material, which becomes magnetized when electricity flows through the wire.

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How does an iron core affect an electromagnet?

Back

An iron core increases the strength of the magnetic field produced by the electromagnet. The iron becomes magnetized and enhances the overall magnetic effect.

Tags

NGSS.MS-PS2-3

Front

What is static electricity?

Back

Static electricity is the build-up of electric charge on the surface of objects. It occurs when certain materials are rubbed together, causing electrons to be transferred from one material to another.

Front

What causes static discharge?

Back

Static discharge occurs when there is a sudden flow of electricity between two objects with different electric charges. This can happen when a person touches a conductive object, like a doorknob, after accumulating static electricity.

Front

What is the role of an insulator in electrical wiring?

Back

An insulator is a material that does not conduct electricity well. Its primary function in electrical wiring is to prevent the flow of electric current, ensuring safety and preventing short circuits.

Front

What materials are good conductors of electricity?

Back

Good conductors of electricity include metals like copper, aluminum, and silver. These materials allow electric current to flow easily through them.

Front

What is the difference between conductors and insulators?

Back

Conductors allow electric current to flow through them easily, while insulators resist the flow of electric current.

Front

What happens when two objects with static electricity come into contact?

Back

When two objects with static electricity come into contact, they can transfer charge between them, resulting in a discharge of static electricity, often felt as a small shock.

Front

What is a magnetic field?

Back

A magnetic field is the area around a magnet where magnetic forces can be detected. It is produced by moving electric charges or by magnetic materials.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Front

How can you increase the strength of an electromagnet?

Back

You can increase the strength of an electromagnet by increasing the number of coils of wire, increasing the electric current, or using a ferromagnetic core material like iron.

Tags

NGSS.MS-PS2-3