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प्रश्न
What are magnetic keepers? What are they used for?
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
Fill in the blank
To light a table lamp and to run a refrigerator, we use ______ as the source of electricity.
Describe a simple experiment to illustrate that like poles of two magnets repel each other while the unlike poles attract ?
What is declination ? Draw a diagram to show the angle between the declination and true direction of geographic north.
The real test of a magnet is ______.
Draw the magnetic flux pattern near a bar magnet placed with its axis in the magnetic meridian and the south pole pointing towards geographic north.
Define the term Magnetic axis
Write a short note on lighting conductors.
The strongest natural magnet is ______.
Define artificial magnet.
