The magnetic field at a distance of 2cm from the axis of a straight conductor carrying current is 12mT.The current in the conductor is

Magnetic lines of force due to a straight conductor carrying current are

A current l is flowing through a long straight solid conductor of radius R = 4 cm. Magnetic field at a distance 2 cm from the axis of conductor is B_0 The distance from the axis, where magnetic field is 1.5 B_0 is (current density is uniform)

Shown in the figure is a conductor carrying a current i. the magnetic field at the origin is :

The magnetic flux density at a point distant d from a long straight current carrying conductor is B, then its value at distance d/2 will be-

Draw the pattern of magnetic field lines around a current carrying strainght conductor. How does the strength of the magnetic field produced change. (i) with the distance from the conductor ? (ii) with increase in current in a conductor ?

A circular wire ABC and a straight conductor ADC are carrying current i and are kept in the magnetic field B then

The magnetic field due to a conductor fo unifrom cross section of radius a and carrying a steady current is represented by

The magnetic field in a straight current carrying conductor wire is:

An electron is ejected from the surface of a long, thick straight conductor carrying a current, initially in a direction perpendicular to the conductor. The electron will

A conductor AB of length 10 cm at a distance of 10 cm 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?