Questions
An election moving with a speed u along the positive x-axis at y = 0 enters a region of uniform magnetic field which exists to the right of y-axis. The electron exits from the region after some time with the speed v at coordinate y, then
detailed solution
Correct option is D
Force on the electron is given by F →=(-e)v→×B→. Direction of F →is along negative y axis.Hence y will be less than zero.The trajectory will be circular as shown .also since magnetic force does not perform any work on the electron , its speed remains unchanged.hence v=u.Talk to our academic expert!
Similar Questions
A charged beam consisting of electrons and positrons enter into a region of uniform magnetic field B perpendicular to field, with a speed v. The maximum separation between an electron and a positron will be (mass of electron = mass of positron = m)
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