Published by:
CGP EDU Academic Team
Published on: September 13, 2026
A particle of mass 
and charge 
has an initial velocity 
. If an electric field 
and magnetic field 
act on the particle, its speed will double after a time :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
JEE Main 2020
as 
(magnitude of velocity does not change in 
plane)
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