An electron with mass m, velocity v and charge e describe half a revolution in a circle of radius r in a magnetic field B. It will acquire energy equal to

A hydrogen ion of mass m and charge q travels with a speed v along a circle of radius r in a uniform magnetic field of flux density B. Obtain the expression for the magnetic force on the ion and determine its time period.

A hydrogen ion of mass m and charge q travels with a speed v along a circle of radius r in a uniform magnetic field of flux density B. Obtain the expression for the magnetic force on the ion and determine its time period.

A charged particle of mass m and charge q describes circular motion of radius r in a uniform magnetic field of strength B the frequency of revolution is

A charged particle of mass m and charge q describes circular motion of radius r in a unifrom magnetic fiels of strenght b the frequency of revolution is

A proton moving with a velocity of 2 xx 10^6 ms^-1 describes a circle of radius R in a magnetic field. The speed of an alpha -particle to describe a circle of same radius in the same magnetic field is

An electron (mass m, charge -e), accelerated through a potential difference V, enters normally a uniform magnetic field B. What will be the radius of the circular motion of the electron ?