An electron enters with a velocity `vecv=v_0hati` into a cubical region (faces parallel to coordinate planes) in which there are uniform electric and magnetic fields. The orbit of the electron is found to spiral down inside the cube in plane parallel to the x-y plane. Suggest a configuration of fields `vecE and vecB` that can lead to it.

An electron is moving with an initial velocity vecv=v_0hati and is in a magnetic field vecB=B_0hatj . Then its de-Broglie wavelength

What is the net flux of the uniform electric field through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?

A charged particle moving with a uniform velocity vecv enters a region where uniform electric and magnetic fields vecE and vecB are present. It passes through the region without any change in its velocity. What can we conclude about the relative direction of vecE , vecv and vecB?

A charged particle moving with a uniform velocity vecv enters a region where uniform electric and magnetic fields vecE and vecB are present. It passes through the region without any change in its velocity. What can we conclude about the magnitude of vecE and vecB ?

An electron mass m with an initial velocity vecv=v_0hati (v_0>0) is in an electric field vecE=-E_0hati(E_0=constant>0) . Its de-Broglie wavelength at time t is given by

There is uniform electric field of 3xx10^3hati Nc^-1 what is the net flux of the uniform electric field through a cube of ide 20 cm oriented so that its faces are parallel to the co-ordinate planes?

An electron and a proton,moving parallel to each other in the same direction with equal momenta enter into a uniform magnetic field which is at right angles to their velocities.Trace their trajectories in the magnetic field.

An electron beam of velocity v moving in the plane of paper enters a region of uniform magnetic field, which is perpendicular to the plane of the paper and traels in a circular path.Does the kinetic energy of electron change during this time? Give reason.

A proton and an electron travelling along parallel patha enters a region of uniform magnetic field, acting perpendicular to their paths. Which of them will move in a circular path with higher frequency.

The region between x=0 and x=L is filled with uniform steady magnetic field B_0hatk . A particle of mass m, positive charge q and velocity v_0hati travels along x-axis and enters the region of the magnetic field. Neglect the gravity throughout the question. Find the value of L if the particle emerges from the region of magnetic field with its final velocilty at an angel 30^@ to its initial velocity.