Magnetism I | Work Done By Magnetic Force on Charged Particle All the best! 1. An electron enters a uniform magnetic field with speed v. It describes a semicircular path and comes out of the field. The final speed of the electron is- Zero v v/2 2v None 2. A charged particle moves through a magnetic field perpendicular to its direction. Then- Its kinetic energy changes but the momentum is constant Its momentum changes but the kinetic energy is constant Both its momentum and kinetic energy of the particle are not constant Both its momentum and kinetic energy of the particle are constant None 3. Assertion- The energy of a charged particle moving in a magnetic field does not change.Reason- The work done by the magnetic force on the charge moving in a magnetic field is zero. Both Assertion and Reason are true and Reason is the correct explanation of Assertion Both Assertion and Reason are true but Reason is not the correct explanation of Assertion Assertion is true but Reason is false Both Assertion and Reason are false None 1 out of 3 Time's up
