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in Physics by (106k points)
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By appropriately matching the information given in the three columns of the following table.
A charged particle (electron or proton) is introduced at the origin (x = 0, y = 0, z = 0) with a given initial velocity  vector v . A uniform electric field vector E  and a uniform magnetic field vector B exist everywhere. The velocity vector v,  electric field vector E  and magnetic field vector B  are given in columns 1, 2 and 3, respectively. The quantities E0, B0 are positive in magnitude.

In which case will the particle move in a straight line with constant velocity?

(A) (III) (ii) (R) 

(B) (IV) (i) (S) 

(C) (III) (iii) (P) 

(D) (II) (iii) (S)

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1 Answer

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by (32.5k points)

(D) For the particle to move in straight line , electric force should be equal and opposite to the magnetic force.
(D) is the correct option.

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