Question

How is the strength of magnetic field near a straight current-conductor
(a) related to the strength of current in the conductor?
(b) is affected by changing the direction of flow of current in the conductor?

Answer 1

Answer:

The strength of magnetic field around a straight current conductor increases on increasing the strength of current in the conductor or vice versa. (ii)The direction of magnetic field around a straight current carrying conductor gets reversed if the direction of current through that conductor is reversed.