What is a magnetic compass? State its use.
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A magnetic compass is a small magnetic needle pivoted at the centre of a small brass box which has a glass top. It is used to locate directions at a place.
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Describe a simple experiment to illustrate that like poles of two magnets repel each other while unlike poles attract.
"Poles exist in pairs". Comment on this statement.
Explain the meaning of the term magnetic field.
What is an electromagnet?