A sphere of radius R is placed near a long straight wire that carries a steady current l. The magnetic field generated by the current is B. The total magnetic flux passing through the sphere is

Magnetic Field Created By Long Current Carrying Wire

A long straight wire carries a current of 35A . What is the magnetic of the field vecB at a point 20cm from the wire?

A long straight wire of radius a carries a steady current I. the current is uniformly distributed across it cross-section. The ratio of the magnetic field at a/2 and 2a is

A circular loop of radius r carries a current i. where should a long , straight wire carrying a current 4i be placed in the plane of the circle so that the magnetic field at the centre becomes zero?

A circular loop of radius r carries a current i. where should a long , straight wire carrying a current 4i be placed in the plane of the circle so that the magnetic field at the centre becomes zero?