Biot Savart law was given by Biot and Savart after doing many experiments. This law is related with the magnetic field induced at a point due to a small current carrying element (conductor). According to the law the magnetic field induced at a point near the current carrying element is directly proportional to the current flowing in conductor, length of the element, sin `theta` and inversely proportional to the square of the distance of point from the element.

The magnetic field induced at a point is inversely proportional to

Options

A. `r ^(2)`
B. `r ^(3)`
C. `(1)/(r )`
D. `(1)/(r ^(2))`

Answer

A

Explanation

according to Biot savart law,the magnetic field at any point is inversely propor tional to the square of distance at that point