Inside a long straight uniform wire of round cross-section, there is a long round cylindrical cavity whose axis is parallel to the axis of the wire and displaced from the latter by a distance l. A direct current of density j flows along the wire. Find the magnetic induction inside the cavity. Consider, in particular, the case `l=0`.

Inside a long staight unifrom wire of round cross-section there is a long round cylindrical cavity whose axis is parallel to the axis of the wire and displaced from the latter by a distance 1. A direct current of density j flows along the wire. Find the magnedtic induction inside the cavity. Consider, in particular , the case l= 0 .

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

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

A constant direct current of uniform density hatj is flowing in an infinitely long cylindrical conductor.The conductor contains an infinitely long cylindrical cavity whose axis is parallel to that of the conductor and is a a distance vecl from it.What will be the magnetic induction vecB at a point inside the cavity at a distance vecr from the centre of cavity?

A constant direct current of uniform density hatj is flowing in an infinitely long cylindrical conductor.The conductor contains an infinitely long cylindrical cavity whose axis is parallel to that of the conductor and is a a distance vecl from it.What will be the magnetic induction vecB at a point inside the cavity at a distance vecr from the centre of cavity?

Inside a uniform sphere of density rho there is a spherical cavity whose centre is at a distance l from the centre of the sphere. Find the strength of the gravitational field inside the cavity.

Inside a uniform sphere of density rho there is a spherical cavity whose centre is at a distance l from the centre of the sphere. Find the strength G of the gravitational field inside the cavity.

A current of 2 amp. flows in a long, straight wire of radius 2 mm . The intensity of magnetic field on the axis of the wire is

A current of 2 amp. flows in a long, straight wire of radius 2 mm . The intensity of magnetic field on the axis of the wire is

A cylindrical cavity of diameter a exists inside a cylinder of diameter 2a as shown in the figure. Both the cylinder and the cavity are infinitity long. A uniform current density j flows along the length . If the magnitude of the magnetic field at the point P is given by (N)/(12) mu_(0)aJ , then the value of N is