A particle of charge 
coulomb moving with velocity 
along the x-axis enters a region where a magnetic field of induction B is along the y-axis, and an electric field of magnitude 
is along the negative z-axis. If the charged particle continues moving along the x-axis, the magnitude of B is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Since particle is moving undeflected.
So 
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