Question

A charged particle q is moving with a velocity   at a point in a magnetic field  and experiences a force If the same charge moves with velocity  from the same point in that magnetic field and experiences a force ,  the magnetic induction at that point will be :

A

B

C

D

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

Let the magnetic induction at required point be
Magnetic force on particle of charge (q), moving with velocity in the magnetic field region of intensity is given as
Case 1:
Case 2:
Thus from

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