Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 45

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A hemispherical surface of radius $R$ is kept in a uniform electric field $E$ as shown in figure. The flux through the curved surface is

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Important Questions on Electric Charges and Fields

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 46

Total electric flux associated with unit positive charge in vacuum is

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 47

A charged body has an electric flux

F

associated with it. Now if the body is placed inside a conducting shell then the electric flux outside the shell is

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 48

A cylinder of radius

R

and length

L

is placed in a uniform electric field

E

parallel to the cylinder axis. The outward flux over the surface of the cylinder is given by

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 49

A rectangular surface of sides

10 cm

and

15 cm

is placed inside a uniform electric field of

25 V m^{- 1},

such that the surface makes an angle of

30 °

with the direction of electric field. Find the flux of the electric field through the rectangular surface

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 50

If an electric field is given by

10 \hat{i} + 3 \hat{j} + 4 \hat{k},

calculate the electric flux through a surface of area

10

units lying in

y z

plane

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 51

There is uniform electric field of

8 \times 10^{3} \hat{i} N C^{- 1} .

What is the net flux (in SI units) of the uniform electric field through a cube of side

0.3 m

oriented so that its faces are parallel to the coordinate plane ?

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 52

A charge

Q

is kept at the corner of a cube. Electric flux passing through one of those faces not touching that charge is

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 53

The electric field in a region is radially outward and at a point is given by

E = 250 r V m^{- 1}

(where

r

is the distance of the point from origin). Calculate the charge contained in a sphere of radius

20 cm

centred at the origin