A charged particle (electron or proton) is introduced at the origin (x=0,y=0,z=0) with a given initial velocity . A uniform electric field and a uniform magnetic field exist everywhere. The velocity , electric field and magnetic field are given in columns 1,2 and 3, respectively. The quantities , are positive in magnitude. | ||
Column 1 | Column 2 | Column 3 |
(I) Electron with | (i) | (P) |
(II) Electron with | (ii) | (Q) |
(III) Proton with | (iii) | (R) |
(IV) Proton with | (iv) | (S) |
In which case would the particle move in a straight line along the negative direction of y-axis (i.e., move along )?
Proton released from rest at origin
Due to electric field in negative y direction, proton accelerates and acquire a velocity along negative y direction
Thus, due to of electrostatic force only, the proton moves along negative y-direction.
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