question_answer

The direction of magnetic lines of force produced by passing a direct current in a conductor is given by

A)  Lenz'slaw

B)  Fleming's left hand rule

C)  Right hand palm rule

D)  Maxwell's law

Correct Answer: D

Solution :

Maxwell's right handed screw rule states that "if we hold the screw driver in the right hand and rotate it such that the screw moves in the direction 01 current in the conductor, then the direction of rotation of the thumb will be the         direction of magnetic lines of force". Hence, Maxwell's law gives the direction of magnetic lines of force produced by passing a direct current in a conductor.                        ;