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प्रश्न
What are magnetic keepers? What are they used for?
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उत्तर
Magnetic keeper: A magnetic keeper is a ferromagnetic bar made from soft iron or steel, which is placed across the poles of a permanent magnet. Magnetic keepers are used to preserving the strength of the magnet by completing the magnetic circuit.
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संबंधित प्रश्न
Describe a simple experiment to illustrate that like poles of two magnets repel each other while the unlike poles attract ?
Explain the meaning of the term magnetic field ?
What is declination ? Draw a diagram to show the angle between the declination and true direction of geographic north.
How will you do this?
Find the north pole of a magnet.
Define the term Poles of a magnet
Draw the magnetic field lines around a bar magnet when a bar magnet is placed such that the N pole points North.
Consider the statement given below and choose the correct option.
Assertion: Iron filings are concentrated more at the magnetic poles.
Reason: The magnets are so sharp.
What is the connection between electricity and magnetism?
Define electromagnet.
