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प्रश्न
State four properties of magnetic field lines.
List two important properties of magnetic field lines.
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उत्तर
- They are closed and continuous curves.
- They are directed from the north pole towards the south pole outside the magnet.
- The tangent at any point on a field line gives the direction of the magnetic field at that point.
- Two magnetic lines never intersect each other.
Notes
Students should refer to the answer according to their questions.
संबंधित प्रश्न
What is a magnetic field? How can the direction of magnetic field lines at a place be determined?
Explain why, a freely suspended magnet always points in the north-south direction.
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
A portable radio has a built-in transformer so that it can work from the mains instead of batteries. Is this a set-up or step down transformer?
What is an artificial magnet? State two reasons why do we need artificial magnets .
Sketch four magnetic field lines as obtained in a limited space on a horizontal plane in the earth's magnetic field alone.
Figure. shows a bar magnet placed on the table top with its north pole pointing towards south. The arrow shows the north-south direction. There are no other magnets or magnetic materials nearby.
Insert two magnetic field lines on either side of the magnet using arrow head to show the direction of each field line.
Define the isoclinic line.
______ is the number of magnetic field lines passing through a given area.
