`AB` and `CD` are long staright conductors, distance `d` apart, carrying a current `I`. The magnetic field on `BC` due to the currents in `AB` and `CD`

AB and CD are long straight conductor, distance d apart, carrying a current l. The magnetic field at the midpoint of BC is

How does magnetic field due to current carrying conductor vary?

How does magnetic field due to current carrying conductor vary?

The figure shows the cross-section of a long cylindrical conductor of radius a carrying a uniformly distributed current i. The magnetic field due to current at P is :

The figure shows the cross-section of a long cylindrical conductor of radius a carrying a uniformly distributed current i. The magnetic field due to current at P is :

Illustrate the magnetic field produced due to a straight current carrying conductor.