A charged particle initially at rest at O ,when released follows a trajectory as shown alongside. Su

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4.Moving Charges and Magnetism

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A charged particle initially at rest at $O$,when released follows a trajectory as shown alongside. Such a trajectory is possible in the presence of

A

electric field of constant magnitude and varying direction

B

magnetic field of constant magnitude and varying direction

C

electric field of constant magnitude and constant direction

D

electric and magnetic fields of constant magnitudes and constant directions which are parallel to each other

(KVPY-2014)

Solution

(a)

As particle is initially at rest, so to move the charged particle an electric field is required.

As path of particle is a curve, so direction of electric field must be changing with distance.

Standard 12

Physics

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