Magnets, Motors & Generators

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What is an electric generator?

Back

An electric generator is a device that converts mechanical energy into electrical energy through the process of electromagnetic induction.

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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 typically consists of a wire wound into a coil around a ferromagnetic core.

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Front

What are the two main forces required for generators and electric motors to work?

Back

Electricity and magnetism.

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Front

What is electricity?

Back

Electricity is the flow of electrons through a conductor.

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What is the energy transformation in an electric generator?

Back

The energy transformation in an electric generator begins as mechanical energy and becomes electrical energy.

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What is the energy transformation in an electric motor?

Back

The energy transformation in an electric motor begins as electrical energy and becomes mechanical energy.

Front

What materials are needed to create an electromagnet?

Back

To create an electromagnet, you need a wire, a battery, and a ferromagnetic material (like an iron nail).

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Front

What is the role of a magnet in a generator?

Back

In a generator, a magnet is used to create a magnetic field that interacts with the motion of conductors to induce electrical current.

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Front

What is the principle of electromagnetic induction?

Back

Electromagnetic induction is the process by which a changing magnetic field within a coil of wire induces an electromotive force (EMF) or voltage in the wire.

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Front

What is the difference between AC and DC electricity?

Back

AC (Alternating Current) is electricity that changes direction periodically, while DC (Direct Current) flows in one direction only.