In the above problem, what will be the magnetic field B inside the wire at a distance r from its centre. If the current density J is uniform across the cross section of the wire.

The magnetic field at a distance r from a long wire carrying current is 0.6 tesla. The magnetic field at a distance 2r is

What is the magnetic field at a point 80 mm from a wire carrying current of 6A?

Find the magnetic induction at a distance of 5 cm from a long straight wire carrying a current of 5A

The magnetic field at a distance r from a long wire carryimg current I is 0.4 T. The magnetic field at a distance 2r is

State the expression for the magnetic field at the centre of a full circle of a wire carrying a current I.

Two long parallel wires going into the plane of the paper are separated by a distance R and carry a current I each in the same direction. Show that the magnitude of the magnetic field at a point P equidistance from the wires and subtending angle theta from the plane containing the wires is B=(mu_0)/pi I/R sin2theta What is the direction of the magnetic field?

A potentiometer has uniform potential gradient. The specific resistance of the material of the potentiometer wire is 10^(-7) ohm-metre and the current passing through it is 0.1 ampere, cross-section of the wire is 10^(-6)" m"^(2) . The potential gradient along the potentiometer wire is

Choose the correct option:- The magnetic field at a distance 'r' from long wire carrying a current is 0.8T. The magnetic field a distance 2r is

Magnetic field at a distance 2.4 cm from a long straight wire is 16muT . What must be current through the wire?