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# What are magnetic field lines? How is the direction of magnetic field at a point in a magnetic field determined using field lines?

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#### A magnetic field line is the path along which a free north-pole tends to move. The direction of a magnetic field at a point is determined by placing a small compass needle. The N - pole of compass indicates the direction of magnetic field at that point.

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Similar Questions
Q1
What are magnetic field lines? How is the direction of magnetic field at a point in a magnetic field determined using field lines?
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Q2
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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Q3
(a) What is a magnetic field? How can the direction of magnetic field lines at a place be determined?
(b) State the rule for the direction of the magnetic field produced around a current-carrying conductor. Draw a sketch of the pattern of field lines due to a current flowing through a straight conductor.
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Q4
What are magnetic field lines with the properties give direction of magnetic field for a point and an electric dipole
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Q5
(a) What is magnetic field?
(b) Draw magnetic field lines around a bar magnet.
(c) Write down four characteristics of magnetic field lines.
(d) State the rule for finding the direction of magnetic field associated with a current carrying conductor.
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