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  • A charged particle is kept at rest on a smooth horizontal surface in uniform magnetic field ‘B’ which is directed vertically downwards as shown in the figure. <img alt="" src=

A charged particle is kept at rest on a smooth horizontal surface in uniform magnetic field ‘B’ which is directed vertically downwards as shown in the figure.

An observer is moving with constant velocity v towards right. Which of the following statement is correct with respect to observer.
 

Option: 1

Path of the charged particle will be straight line.
 


Option: 2

Magnetic force on the charged particle is zero.
 


Option: 3

Magnitude of magnetic force on charged particle is qvB initially.
 


Option: 4

Both (1) and (3)


Answers (1)

best_answer

Answer (3)

The charged particle is moving in straight line at speed v w.r.t the observer in backward direction.

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