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  • Choose the incorrect statement from the following regarding magnetic lines of field (a) The direction of magnetic field at a point is taken to be the direction in which the north pole of a magnetic compass needle points(b) Magnetic field lines are close

Choose the incorrect statement from the following regarding magnetic lines of field
(a) The direction of magnetic field at a point is taken to be the direction in which the north pole of 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

Answers (1)

Answer: C
Solution:
Magnetic field lines are imaginary lines, which are used to represent magnetic field strength and its direction in the space.
The closeness of magnetic field lines represents the magnetic field strength.
The direction of magnetic field strength at any point is along direction of magnetic field line.
At any point direction can be deduced by using magnetic needle, the North Pole of the magnetic needle will be in the direction of magnetic field line.
These magnetic field lines forms close loop.
If magnetic field lines are drawn equidistant and parallel to each other it represents uniform magnetic field.
Hence the correct option of this question his option C

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