1

JEE Main 2020 (Online) 8th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

In finding the electric field using Gauss Law
the formula $$\left| {\overrightarrow E } \right| = {{{q_{enc}}} \over {{\varepsilon _0}\left| A \right|}}$$ is applicable. In the
formula $${{\varepsilon _0}}$$ is permittivity of free space, A is the
area of Gaussian surface and q

_{enc}is charge enclosed by the Gaussian surface. The equation can be used in which of the following situation?2

JEE Main 2020 (Online) 8th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

Three charged particle A, B and C with charges
–4q, 2q and –2q are present on the
circumference of a circle of radius d. the charged
particles A, C and centre O of the circle formed
an equilateral triangle as shown in figure. Electric
field at O along x-direction is :

3

JEE Main 2020 (Online) 7th January Morning Slot

MCQ (Single Correct Answer)

+4

-1

Two infinite planes each with uniform surface charge density to are kept in such a way that the angle between them is 30

^{o}. The electric field in the region shown between them is given by :4

JEE Main 2019 (Online) 12th April Evening Slot

MCQ (Single Correct Answer)

+4

-1

Let a total charge 2Q be distributed in a sphere of radius R, with the charge density given by $$\rho $$(r) = kr, where
r is the distance from the centre. Two charges A and B, of –Q each, are placed on diametrically opposite
points, at equal distance, $$a$$ from the centre. If A and B do not experience any force, then :

Questions Asked from Electrostatics (MCQ (Single Correct Answer))

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