An electron beam moving with a speed of
`2.5xx10^(7) ms^(-1)` enters into the magnetic field
`4xx10^(-3) Wb//m^(2)` directed perpendicular to its direction of motion. Find the intensity of the electron moves undeflected .

An electron moving with a kinetic energy of 1.5 xx 10^(3) eV enters in a region of uniform magnetic field of induction 4 xx 10^(-3) Wb//m^(2) at right angles to the direction of motion of the electron . The radius of circular path of the electron in the magnetic field is

The radius of the path of an electron moving at a speed of 3xx10^(7) ms^(-1) perpendiuclar to a magnetic field 5xx10^(-4) T is nearly

An electron moving in a horizontal direction with a speed of 5.0 xx 10^(7)ms^(-1) enters a region where there is an electric field of 2000 V m^(-1) directed upwards in its plane of motion. Find the electron coordinates referred to the point of entry and its direction of motion 4 xx 10^(-8) s later.

An electron moving with a speed of 2.5 xx 10^(7) ms^(-1) is deflected by an electric field of 1600 Vm^(-1) perpendicular to its circular path. If the radius of the electron trajectory is 2.3 m, calculate the e/m for the electron.

An electron, moving with a velocity of 5xx10^(7)ms^(-1) , enters in a magnetic field of 1 "Wb" m^(-1) at an angle of 30^(@0) . Calculate the force on the electron.

An electron is moving with a velocity of 5 xx 10^(7) m/s in a magnetic field of 6 xx 10^(-4) T perpendicular to it. What is the frequency? Also find the energy of electron in MeV.

A mono energetic electron beam with a speed of 5.2xx10^(6) ms^(-1) enters into a magnetic filed of induction 3xx10^(-4) T , directed normal to the beam . Find the radius of the circul traced by the beam (Take e//m=1.76xx10^(11) Ckg)