Magnetism

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What is an electromagnet?

Back

An electromagnet is a type of magnet that becomes magnetized when an electric current flows through it.

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What is the nature of magnetic fields?

Back

Magnetic fields are invisible forces that can be detected using materials like iron filings.

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Front

What happens when two North poles of magnets are brought together?

Back

They repel each other.

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Front

What materials can become magnetic in a magnetic field?

Back

Certain materials, such as iron, can become magnetic when exposed to a magnetic field.

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What is magnetism?

Back

Magnetism is a force of attraction or repulsion that occurs between two magnetic objects.

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Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet maintains its magnetism without an external power source, while an electromagnet requires electric current to generate a magnetic field.

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What is the role of electric current in magnetism?

Back

Electric current creates a magnetic field around a conductor, allowing it to act as an electromagnet.

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Front

What is a magnetic pole?

Back

A magnetic pole is one of the two ends of a magnet where the magnetic force is strongest; they are called North and South poles.

Front

What occurs when a North pole and a South pole of magnets are brought together?

Back

They attract each other.

Front

What is magnetic induction?

Back

Magnetic induction is the process by which a material becomes magnetized when exposed to a magnetic field.