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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
State whether the following statement is true of false:
The axis of earth's imaginary magnet and the geographical axis coincide with each other.
A strong bar magnet is placed vertically above a horizontal wooden board. The magnetic lines of force will be:
(a) only in horizontal plane around the magnet
(b) only in vertical plane around the magnet
(c) in horizontal as well as in vertical planes around the magnet
(d) in all the planes around the magnet
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.
Fill in the following blank with suitable words:
The lines of ........... round a straight current-carrying conductor are in the shape of ...........
A charged particle enters at right angles into a uniform magnetic field as shown:
What should be the nature of charge on the particle if it begins to move in a direction pointing vertically our of the page due to its interaction with the magnetic field?
Write a note on the 'magnetic field'.
Define the isoclinic line.
How do you account for the following fact?
Soft iron keepers help to prevent the magnets from losing their magnetic properties.
The direction of the magnetic lines around a current-carrying conductor can be easily understood using the ______ rule.
A charge moving in a magnetic field, in a direction other than the direction of the magnetic field, experiences a force. It is called the ______ force.
