Question

List factors of magnitude of magnetic field around a current carrying conductor and nature of its dependence

Answer 1

If it is a straight current carrying conductor then the magnetic field(B) is dependent on :

1. B∞ I

  B is directly proportional to the Current flowing through the conductor.

2. B∞ 1/r

   B is inversely prop to the distance from the point where we are supposed to find the magnetic field.

If however it is a circular current carrying conductor (too many c's...!) then we add one more factor that the no. of turns.

3. B is directly proportional to the number of turns of the circular coil like conductor.