A particle having a mass of 
kg carries a charge of 
C. The particle is given an initial horizontal velocity of 
in the presence of electric field 
and magnetic field 
. To keep the particle moving in a horizontal direction, it is necessary that
A
should be perpendicular to the direction of velocity and 
should be along the direction of velocity and
B
Both 
and 
should be along the direction of velocity and and
and should be along the direction of velocity and and
C
Both 
and 
are mutually perpendicular and perpendicular to the direction of velocity and
and are mutually perpendicular and perpendicular to the direction of velocity and
D
should be along the direction of velocity and 
should be perpendicular to the direction of velocity. Which one of the following pairs of statements is possible?
Text Solution
Verified by ExpertsThe correct answer is:
C
is along velocity 
, hence path is straight line, 
is O.K.
, net force 
, hence particle moves in straight line 
is O.K.
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