NEET UG PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

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A charged particle of mass m and charge q is released from rest in a uniform electric field E. The KE of particle after time t is:

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Correct option: B

\frac{{{q^2}{E^2}{t^2}}}{{2m}}

Option B (

\frac{{{q^2}{E^2}{t^2}}}{{2m}}

) is correct because it is derived from calculating the work done by the electric field on the charged particle, which equals the kinetic energy gained.

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The ratio of magnitude of electric displacement (D) and electric field (E) is Gauss’s Law is valid for In hydrogen like system the ratio of coulombian force and gravitational force between an electron and a proton is in the order of: Statement-1:

\overrightarrow{{E}}

in outside velocity of a conductor depends only on the local charge density

\alpha

.
Statement-2:

\overrightarrow{{E}}

in outside vicinity of a conductor is given by

\frac{\sigma}{\varepsilon_0}

. Two charges each of 1 coulomb are at a distance 1

km

apart the force between them is

P \times 10^3

then value of

{P}

is Electric field due to point charge depends on distance

r