List of top Physics Questions on Motion in a Magnetic Field asked in CUET (UG)

Arrange the following steps in the chronological order, when a charged particle enters perpendicularly into a uniform magnetic field. (A) The charged particle starts moving in a circular path. (B) Net work done by the field is zero. (C) The speed of the charged particle remains constant but its direction changes. (D) A force acts perpendicular to both the velocity of the charged particle and the magnetic field. Choose the correct answer from the options given below:

A deuteron and an alpha particle with the same kinetic energy move in circular paths under the effect of the same magnetic field. The ratio of the radii \((r_d:r_\alpha)\) of their trajectories is

A charged particle accelerated through a potential difference of V volts acquires a speed u. The particle is then made to enter perpendicularly in a uniform magnetic field B. The radius of the circular path followed by the charged particle will be proportional to