1

JEE Main 2021 (Online) 25th July Morning Shift

Numerical

+4

-1

A particle of mass 1 mg and charge q is lying at the mid-point of two stationary particles kept at a distance '2 m' when each is carrying same charge 'q'. If the free charged particle is displaced from its equilibrium position through distance 'x' (x < < 1 m). The particle executes SHM. Its angular frequency of oscillation will be ____________ $$\times$$ 10

^{5}rad/s if q^{2}= 10 C^{2}.Your input ____

2

JEE Main 2021 (Online) 22th July Evening Shift

Numerical

+4

-1

The total charge enclosed in an incremental volume of 2 $$\times$$ 10

D = e

^{$$-$$9}m^{3}located at the origin is ___________ nC, if electric flux density of its field is found asD = e

^{$$-$$x}sin y $$\widehat i$$ $$-$$ e^{$$-$$x}cos y $$\widehat j$$ + 2z $$\widehat k$$ C/m^{2}Your input ____

3

JEE Main 2021 (Online) 20th July Morning Shift

Numerical

+4

-1

A body having specific charge 8 $$\mu$$C/g is resting on a frictionless plane at a distance 10 cm from the wall (as shown in the figure). It starts moving towards the wall when a uniform electric field of 100 V/m is applied horizontally towards the wall. If the collision of the body with the wall is perfectly elastic, then the time period of the motion will be _______________ s.

Your input ____

4

JEE Main 2021 (Online) 18th March Evening Shift

Numerical

+4

-1

An infinite number of point charges, each carrying 1 $$\mu$$C charge, are placed along the y-axis at y = 1 m, 2 m, 4 m, 8 m ...............

The total force on a 1C point charge, placed at the origin, is x $$\times$$ 10

The value of x, to the nearest integer, is __________. [Take $${1 \over {4\pi {\varepsilon _0}}} = 9 \times {10^9}$$ Nm

The total force on a 1C point charge, placed at the origin, is x $$\times$$ 10

^{3}N.The value of x, to the nearest integer, is __________. [Take $${1 \over {4\pi {\varepsilon _0}}} = 9 \times {10^9}$$ Nm

^{2}/C^{2}]Your input ____

Questions Asked from Electrostatics (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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