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, that becomes magnetized when electricity flows through it.

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How can you increase the strength of an electromagnet?

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You can increase the strength of an electromagnet by using a stronger battery, adding more wire coils, or using a ferromagnetic core material.

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What is 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.

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What is a parallel circuit?

Back

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

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What materials can complete an electric circuit?

Back

Materials that can complete an electric circuit are conductors, such as metals (e.g., copper, aluminum) that allow electric current to flow through them.

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What happens when a copper wire is connected to a battery?

Back

When a copper wire is connected to the positive and negative ends of a battery, it creates a closed circuit, allowing an electric current to flow through the wire.

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What is a magnetic field?

Back

A magnetic field is the area around a magnet where magnetic forces can be detected. It is strongest at the poles of the magnet.

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Front

Where is the magnetic field strongest in a magnet?

Back

The magnetic field is strongest at both the north and south poles of a magnet.

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Front

What is static electricity?

Back

Static electricity is the buildup of electric charge on the surface of objects, which can cause them to attract or repel each other.

Front

What is an electric current?

Back

An electric current is the flow of electric charge, typically measured in amperes (A), and is caused by the movement of electrons through a conductor.