A student is investigating the magnetic field produced by a straight
PHYSICS · Multi-part · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
A student is investigating the magnetic field produced by a straight, long conductor kept vertical on a laboratory stand.
(i) State the rule that gives the direction of the magnetic field around a current-carrying straight conductor.
(ii) The conductor carries a current of 3A upward. Draw a neat, labelled diagram to show the pattern of magnetic field lines around it and indicate their direction.
(iii) If the current in the same conductor is reversed, explain clearly how the diagram in part (ii) will change.