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A long cylindrical wire carries a positive charge of linear density lambda . An electron (-e ,m) revolves around it in a circular path under the influence of the attractive electrostatic force. Find the speed of the electron.

A long cylindrical wire carries a positive charge of linear density lambda . An electron (-e ,m) revolves around it in a circular path under the influence of the attractive electrostatic force. Find the speed of the electron.

A long cylindrical wire carries a steady current which is uniformly distributed across its cross section. Which of the following is true?

A long, cylindrical wire of radius b carries a current i distributed uniformly over its cross section. Find the magnitude of the magnetic field at a point inside the wire at a distance a from the axis.

A long, cylindrical wire of radius b carries a current i distributed uniformly over its cross section. Find the magnitude of the magnetic field at a point inside the wire at a distance a from the axis.

A long, cylindrical wire of radius b carries a current i distributed uniformly over its cross section. Find the magnitude of the magnetic field at a point inside the wire at a distance a from the axis.

Find the total field energy of magnetic field stored per unit length inside a long cylindrical wire of radius R and carrying a current I.

A long cylindrical wire carrying current of 10 A has radius of 5 mm find its its magnetic field induction at a point 2 mm from the centre of the wire

A long cylindrical wire carrying current of 10 A has radius of 5 mm find its its magnetic field induction at a point 2 mm from the centre of the wire

A long, straight wire carries a current i . The magnetizing field intensity H is measured at a point P close to the wire. A long, cylindrical iron rod is brought close to the wire so that the point P is at the centre of the rod. The value of H at P will