Question


A particle of charge coulomb moving with velocity 10 along the x-axis enters a region where a magnetic field of induction is along the -axis, and an electric field of induction is along the -axis, and an electric field of magnitude is along the negative -axis. lf the charged particle continues moving along the -axis, the magnitude of is

A

B

C

D

Hard
Updated on : 2022-09-05
Solution
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Correct option is A)

Particle travels along axis 
Hence
Electric feild is along the negative axis
Therefore net force on the particle
Resolve the motion along three coordinate axis
Since, 
Again , as the particle transverse through the region undeflected 

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