Electrons move at right angles to a magnetic field of 100 gauss and enter it with a velocity fo `2xx10^10 cms^-1` . Find the radius of their circular path. Given `e//m = 1.7 xx 10^7 e.m.u g^-1`

A charge q of mass m moving with velocity v, at right angles to a uniform magnetic field B. Deduce the expression for the radius of the circular path it describes.

An electron eneters a magnetic field of 5 T intensity with velocity of 5xx10^6ms^-1 at an angle of 30^@ with the field. Find the magnitude of the force acting on the electron.

A monoenergtic electron beam with electron speed of 5.20 xx 10^6 ms^-1 is subjected to a magnetic field of 1.30 xx 10^-4 t normal to beam velocity. What is the radius of the circle traced by the beam, given e/m for electron equals 1.76 xx 10^11 kg^-1 ?

A proton enters a magnetic field of 4 T intensity with a velocity of 2.5 xx 10^6 ms^-1 at an angle of 30^@ with the field. Find the magnitude of the force on the proton. Charge of the proton = 1.602 xx 10^-19 coulomb.

An electron is projected with a velocity of 10^5 ms^-1 at right angles to the magnetic field of 0.019 G. Caclculate the radius of the circle described by the electron.

A proton of velocity of 10^8 cms^-1 is moving perpendicular to a uniform magnetic field of 10 kilogauss. What is the sideway force actig on the proton of charge e = 4.8 xx 10^10 e.s.u.?