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Introduction to Electromagnetism and Magnetic Effects

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Introduction to Electromagnetism and Magnetic Effects

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Questions and Answers

According to the first law of magnetism, what happens when like magnetic poles are brought close to each other?

They attract each other

They repel each other (correct)

They create a magnetic field

They have no effect on each other

What is the unit of pole strength?

Ampere

Weber (correct)

Newton

Tesla

What is the relationship between the force exerted by one pole on another and the distance between them, according to the second law of magnetism?

The force is directly proportional to the distance

The force is inversely proportional to the square of the distance (correct)

The force is directly proportional to the square of the distance

The force is inversely proportional to the distance

What is the definition of equal pole strengths according to the text?

Poles that exert equal forces on another pole under identical conditions (D) Signup and view all the answers

What does the constant 'K' in the second law of magnetism depend on?

The nature of the surrounding medium (A) Signup and view all the answers

What is the phenomenon due to which a magnet can induce magnetism in another object without physical contact?

Magnetic Induction (A) Signup and view all the answers

Which of the following best defines pole strength in the context of magnets?

The force exerted by one magnet on another magnet (D) Signup and view all the answers

Why do like magnetic poles repel each other?

As part of the natural magnetic behavior (D) Signup and view all the answers

What important property of a magnet leads to it aligning itself in a specific direction?

Setting its poles towards specific directions (C) Signup and view all the answers

Who discovered the relationship between current electricity and electromagnetism in 1820?

Cested (A) Signup and view all the answers

What forms the basis of electromagnetism according to the text?

Current Electricity (D) Signup and view all the answers