A solenoid of radius r is made of thin metallic wire rings

Last updated: 6/21/2023

A solenoid of radius r is made of thin metallic wire rings with resistance of each ring R The ring have been put in a uniform way on a very long glass cylinder which has vacuum inside it Th solenoid and glass cylinder are glued to each other The number of rings per unit length is n an the planes containing the rings are perpendicular to the symmetry axis of the cylinder At moment the cylinder starts rotating around its symmetry axis with an angular acceleration a Th magnetic field B at the centre of the cylinder after a long time is is specific charge m electron A B nmr a eR nmr eR