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प्रश्न
Explain why iron filings which are sprinkled on a sheet of cardboard placed over a bar magnet take up a definite pattern when cardboard is slightly tapped.
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उत्तर
The iron filings take up a definite pattern (curved lines). This happens because each piece of iron filing becomes a magnet to the magnetic induction of the magnet. It thus experiences a force in the direction of magnetic field of the bar magnet at that point and aligns itself along curved lines.
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संबंधित प्रश्न
Explain why, two magnetic field lines of not intersect each other.
The magnetic field lines produced by a bar magnet:
(a) originate from the south pole and end at its north pole
(b) originate from the north pole and end at its east pole
(c) originate from the north pole and end at its south pole
(d) originate from the south pole and end at its west pole
The shape of the earth's magnetic field resembles that of an imaginary:
(a) U-shaped magnet
(b) Straight conductor carrying current
(c) Current-carrying circular coil
(d) Bar magnet
What is a lodestone?
What do you understand by the term magnetic field lines?
Inside the magnet, the field lines moves ____________.
A magnetic needle is kept in a non-uniform magnetic field. It experiences ______.
______ is the number of magnetic field lines passing through a given area.
The direction of the magnetic lines around a current-carrying conductor can be easily understood using the ______ rule.
A wire 10 cm long carrying a current of 1.5 A is held in a uniform magneÑic field in which B = 10-3 T. Calculate the force on the wire if it is held perpendicular to the lines of the magnetic field.
