Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 1>Q 18

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Which of the following patterns of electric lines of force cannot be possible for the field produced by a static charge?

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Important Questions on Electrostatics

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Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 1>Q 19

If the flux of the electric field through a closed surface is zero, then

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Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 1>Q 20

Consider two concentric spherical surfaces

S_{1}

with radius

a

and

S_{2}

with radius

2 a

, both centred at the origin. There is a charge

+ q

at the origin and there are no other charges. Compare the flux

ϕ_{1}

, through

S_{1}

with the flux

ϕ_{2}

, through

S_{2}

.

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Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 1>Q 21

If

E = (\hat{i} + \sqrt{2} \hat{j} + \sqrt{3} \hat{k}) V m^{- 1}

, then the electric flux through a surface area of

100 m^{2}

lying in the

x y

plane is (in

V m

),

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Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 1>Q 22

A point charge

q

is placed near a hemispherical surface without base, cylindrical surface with one end open, spherical surface, and hemispherical surface with the base as shown in the figures in

a, b, c

and

d

respectively. In which of the following cases, the flux crossing through the surface is zero?

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Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 1>Q 23

A uniform electric field of

10 N C^{- 1}

exists in the vertically downward direction. Find the increase in the electric potential (in

V

) as one goes up through a height of

50 cm .

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Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 1>Q 24

Electric potential at a certain point due to a point charge and a dipole are respectively proportional to

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Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 1>Q 25

The potential of the electric field produced by point charge at any point

(x, y, z)

is given by

V = 3 x^{2} + 5,

where

x, y

are in

metre

and

V

is in

volt

. The intensity of the electric field at,

x = - 2

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Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 1>Q 26

Figure shows some equipotential lines distributed in space. A charged object is moved from point $A$ to point $B$ .

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