NCERT Solutions for Chapter: Moving Charges and Magnetism, Exercise 1: MCQ

The gyromagnetic ratio of an electron in an H-atom, according to Bohr model, is

Consider a wire carrying a steady current, $I$ placed in a uniform magnetic field $B$ perpendicular to its length. Consider the charges inside the wire. It is known that magnetic forces do no work. This implies that,

Two identical current carrying coaxial loops, carry current $I$ in an opposite sense. A simple amperian loop passes through both of them once. Calling the loop as $C$,

A cubical region of space is filled with some uniform electric and magnetic fields. An electron enters the cube across one of its faces with velocity $v$ and a positron enters via opposite face with velocity $- v$. At this instant,

A charged particle would continue to move with a constant velocity in a region wherein,