A particle of charge and mass is subjected to an electric field in the -direction

PHYSICS · Single correct · AP · Physics C: Electricity and Magnetism · Electric Potential · Electric Potential

Problem

A particle of charge

q

and mass

m

is subjected to an electric field

E = E_0 (1 - ax^2)

in the

x

-direction, where

a

and

E_0

are constants. Initially the particle was at rest at

x = 0

. Other than the initial position the kinetic energy of the particle becomes zero when the distance of the particle from the origin is : [Main Sep. 04, 2020 (II)] (1)

a

(2)

\sqrt{\frac{2}{a}}

(3)

\sqrt{\frac{3}{a}}

(4)

\sqrt{\frac{1}{a}}

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