Question

A particle of mass m and charge q is thrown at a
speed u against a uniform electric field [.
distance it travelled before coming to rest will be​

Answer 1

Answer:

Let a particle of mass m and of charge q travelling against the uniform electric field E then the force experience by the particle is

F=qE

ma=qE

a=qE/m …………(1)

we have:

v2=u2 +2as

0=u2 +2as

s=-u2/2a

from equation (1)

s=-u2/2(qE/m)

s=-u2m/2qE

Therefore the distance travel by the particle before coming to momentary rest is given by -u2m/2qE

Negative sign because the particle is retarding.

Explanation:

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