NEET UG PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

1 Hard

1 of 1

Application +4 | -1

A particle of charge

-q

and mass

m

moves in a circle of radius

r

around an infinitely long line charge of linear charge density

+\lambda.

Then time period will be given as:

(Consider

k

as Coulomb's constant)

View answer and explanation

Correct option: C

T=2 \pi r \sqrt{\frac{m}{2 k \lambda q}}

Option C is correct because it accurately applies the concept of centripetal force provided by the electric field of the line charge to derive the time period of the particle's circular motion.

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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