Published by:
CGP EDU Academic Team
Published on: August 21, 2026
An electron (mass 
and charge 
) moving with speed 
speed of light) is injected into a magnetic field 
of magnitude 
perpendicular to its direction of motion. We wish to apply an uniform electric field 
together with the magnetic field so that the electron does not deflect from its path. Then (speed of light 
)
A
is perpendicular to 
and its magnitude is 
B
is perpendicular to 
and its magnitude is 
C
is parallel to 
and its magnitude is 
D
is parallel to 
and its magnitude is 
Text Solution
Verified by ExpertsThe correct answer is:
For particle To Remain undeflected
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