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Question
Write a note on the 'magnetic field'.
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Solution
The magnetic field is defined as the region around a magnet where the magnetic force can be experienced by an object. Magnetic field lines are the geometrical representation of the magnetic field. Following are the characteristics of magnetic field lines:
- Magnetic field lines emanate from the North Pole and terminate at the South Pole of a magnet (outside the magnet).
- The degree of closeness of magnetic field lines represents the relative strength of the magnet.
- No two field lines can intersect each other.
Field lines due to a bar magnet are shown below:
Magnetic field lines due to a bar magnet.
RELATED QUESTIONS
What is a magnetic field? How can the direction of magnetic field lines at a place be determined?
Which of the following statements is incorrect regarding magnetic field lines?
(a) The direction of magnetic field at a point is taken to be the direction in which the north pole a magnetic compass needle points.
(b) Magnetic field lines are closed curves.
(c) If magnetic field lines are parallel and equidistant, they represent zero field strength.
(d) Relative strength of magnetic field is shown by the degree of closeness of the field lines.
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State whether the magnetic field lines in part (a) represent a uniform magnetic field or non-uniform magnetic field?
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Insert two magnetic field lines on either side of the magnet using arrow head to show the direction of each field line.
Complete the following diagram of magnets to show the lines of force.
Complete the following diagram of magnets to show the lines of force.
If the key in the arrangement is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are
The relation between weber and Tesla is ______.
