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

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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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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 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

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 54

An isolated solid metal sphere of radius

R

is given an electric charge. Which of the graphs below best shows the way in which the electric field

E

varies with distance

x

from the centre of the sphere ?

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 55

The electric field intensity at $P$ and $Q,$ in the shown arrangement, are in the ratio

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 57

An electron is rotating around an infinite positive linear charge in a circle of radius

0.1 m,

if the linear charge density is

1 μ C m^{- 1},

then the velocity of electron in

m s^{- 1}

will be

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 58

A dipole with an electric moment

\vec{p}

is located at a distance

r

from a long thread charged uniformly with a linear charge density

λ .

Find the force

F

acting on the dipole if the vector

\vec{p}

is oriented along the thread