question_answer

The direction of magnetic lines of forces close to a straight conductor carrying current will be      [RPMT 2002; RPET 2003; MP PET 2003]

A)            Along the length of the conductor

B)            Radially outward

C)            Circular in a plane perpendicular to the conductor

D)            Helical

Correct Answer: C

Solution :

                   See the following figure