A beam of electrons is moving with constant velocity in a region having simultaneous perpendicular electric and magnetic fields of strength `20Vm^(-1)` and 0.5 T, respectively at right angles to the direction of motion of the electrons. Then, the velocity of electrons must be

A beam of electrons is moving with constant velocity in a region having simultaneous perpendicular electric and magnetic fields of strength 20Vm^(-1) and 0.5 T, respectively at right angles to the direction of motion of the electrons. Then, to move undeflected the velocity of electrons must be (a) 8 m//s (b) 20 m//s (c) 40 m//s (d) (1)/(40)m//s

A beam of electrons is moving with uniform velocity in a region having transverse uniform electric and magnetic field of strength. 100 V/m and 0.1 T respectively at right angles to the direction of beam. The velocity of the electrons is

A beam of electron is moving with constant velocity in a region having electric and magnetic fields of strength 20Vm^(-1) and 0.5T at right angles to the direction of motion of the electrons. What is the velocity of the electrons?

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

If an electron is going in the direction of magnetic field vecB with the velocity of vecv then the force on electron is

In a certain region of space electric field E and magnetic field B are perpendicular ot each other and an electron enters region perpendicular to the direction of B and E both and moves undeflected, then velocity of electron is

An the electron undeflected when passing perpen to mutually perpendicular electric and magnetic fields magnetic field is 8 Gauss and the electric field Vm^(-1) the velocity of the electron is

An electron beam is allowed to pass normally through megnetic and electric fields which are mutually perpendicular. When the magnetic filed inductionand electric field strength are 0.0004Wbm^(-2)and 3000Vm^(-1) respectively the beam suffers no deflection .Then the velocity of electron is