[" 12.A long straight wire of resistance R radius a and length "l],[" carries a constant current I.The Poynting vector for the "],[" wire will be - "]

A long straigth wire of resistance R , radius a and length l carries a constant current I .The poynting vector for the wire will be

A long straight wire of cross sectional radius a carries a current I. The return current is carried by an identical wire which is parallel to the first wire. The centre to centre distance between the two wires is d. Find the inductance (L) of a length x of this arrangement. Neglect magnetic flux inside the wires.

Write Ampere's circuital law.A long straight wire of a circular cross section (radius a ) carrying steady current.Current is uniformly distributed in the wire.Calculate magnetic field inside the region (r lt a) in the wire.

A long, straight wire of radius R carries a current distributed uniformly over its cross section. The magnitude of the magnetic field is

A long, straight wire of radius R carries a current distributed uniformly over its cross section. The magnitude of the magnetic field is

A long, straight wire of radius R carries a current distributed uniformly over its cross section. The magnitude of the magnetic field is

A long straight wire of a circular cross section (radius a ) carrying steady current. Current is uniformly distributed in the wire. Calculate magnetic field inside the region (r lt a) in the wire.

Calculate the force per unit length on a long straight wire carrying current of 4A due to a parallel wire carrying 6 A current if the distance between the wire is 3cm .

A long straight wire of circular cross- section carries a current along its length. On the axis inside the wire, it follows that