MagnetismHard
Question
A particle of mass m and charge q is thrown origin at t = 0 with velocity 2î + 3ĵ + 4
units in a region with uniform magnetic field 2î units. After time t = 
, an electric file 
is switched on, such that particle moves on a straight line with constant speed.may 
be
units in a region with uniform magnetic field 2î units. After time t = , an electric file is switched on, such that particle moves on a straight line with constant speed.may be Options
A.- 8ĵ + 6units
units B.- 6ĵ - 9units
units C.- 12ĵ + 9units
units D.8ĵ - 6units
units Solution
At t = 
= 2î - 2ĵ - 4
; For net to be zero force to be zero
= 0 ⇒
= - 
= - 8ĵ + 6
= 2î - 2ĵ - 4; For net to be zero force to be zero = 0 ⇒ = - = - 8ĵ + 6 Create a free account to view solution
View Solution FreeMore Magnetism Questions
A particle having a mass of 10-2 kg carries a charge of 5 × 10-8C. The particle is given an initial horizontal velo...A beam of cathode rays is accelerated by a potential V and then subjected to crossed electric (E) and magnetic field (B)...Electron moves at right angles to a magnetic field of 1.5 × 10-2 tesla with speed of 6 × 107 m/s. If the speci...An electron is travelling along the x-direction. It encounters a magnetic field in the y-direction. Its subsequent motio...Two small magnet of magnetic moment M1 and M2 are placed at a distance r then the magnetic force in between these two is...