Magnetic field at a distance r from an infinitely long straight conductor carrying steady varies as

Calculate the magnetic field at a distance of 5 cm from an infinite straight conductor carrying a current of 10 A.

The magnetic flux denisty B at a distance r from a long stright rod carrying a steady current varies with r as show in the

Calculate the value of magnetic field at a distance of 2 cm from a very long straight wire carrying a current 5 A

Using Ampere's circuital law, obtain an expression for the magnetic induction at a point near an infinitely long straight conductor carrying an electric current.

Calculate the magnetic field at a point P. 0.5 m away from an infinitely long straight wire carrying current of 90 A.

The magnetic induction at a distance r from a straight, infinitely long wire in air and carrying a current I is given by

A conductor AB of length 10 cm at a distance of 10cm from an infinitely long parallel conductor carrying a current 10A . What work must be done to move AB to a distance of 20cm if it carries 5A ?

The magnetic field at a perpendicular distance of 2cm from an infinite straight current carrying conductor is 2xx10^-6T . The current in the wire is