Question

A charged particle having charge q experiences a force in a magnetic field B when it has a velocity . The force becomes when the velocity is changed to . The magnetic induction vector at that point is :

A

B

C

D

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

Let the magnetic induction at required point be 
Magnetic Force on charged particle (q) moving with Velocity (V) in magnetic field is given as 
Case 1:
Case 2:
From
Thus, option A

Solve any question of Moving Charges and Magnetism with:-
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