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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?
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?
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?
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?
What is the definition of equal pole strengths according to the text?
What does the constant 'K' in the second law of magnetism depend on?
What does the constant 'K' in the second law of magnetism depend on?
What is the phenomenon due to which a magnet can induce magnetism in another object without physical contact?
What is the phenomenon due to which a magnet can induce magnetism in another object without physical contact?
Which of the following best defines pole strength in the context of magnets?
Which of the following best defines pole strength in the context of magnets?
Why do like magnetic poles repel each other?
Why do like magnetic poles repel each other?
What important property of a magnet leads to it aligning itself in a specific direction?
What important property of a magnet leads to it aligning itself in a specific direction?
Who discovered the relationship between current electricity and electromagnetism in 1820?
Who discovered the relationship between current electricity and electromagnetism in 1820?
What forms the basis of electromagnetism according to the text?
What forms the basis of electromagnetism according to the text?
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