1.

What are magnetic field lines ? List any two characteristics of field lines. Draw the pattern of magnetic field lines due to a current carrying circular loop.

Answer»

Solution : A magnetic field line is the path along which a free north pole tends to move. CHARACTERISTICS :
(i) OUTSIDE a magnet, the magnetic field lines are directed from N-pole of magnet TOWARDS S-pole. However, INSIDE a magnet, field lines are directed from S-pole to N-pole. (ii) The relative strength of magnetic field lines is given by degree of closeness of the field lines. More crowded field lines means a stronger field.
(iii) No two magnetic field lines can ever intersect each other.
Diagram : Magnetic field pattern of a CURRENT carrying circular loop


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