Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>EXERCISE>Q 23

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$S_{1}, S_{2}, S_{3}$ are three concentric spherical shells, as shown in figure. $S_{1}$ and $S_{2}$ have charge $4 Q$ and $8 Q$ respectively, whereas $S_{3}$ is uncharged. Find the ratio of the flux passing through $S_{1}$ to that through $S_{3}$

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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>EXERCISE>Q 29

If

r

is distance measured from centre of a charged shell and

R

is its radius, then the graph which may correctly represent variation of electric field

(E)

is

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>EXERCISE>Q 30

The flux through the hemispherical surface in the figure shown below is

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 1

If there are

100

free electrons excess on a body, then what will be net charge on it?

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 2

The dimension of relative permittivity

^{'} ε_{r}^{'}

is

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 3

Unit of electric dipole moment is:

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 4

A point charge $q$ of mass $m$ is placed at $A$ in external electric field $E$ . What will be the acceleration $' a'$ of charge particle?

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 5

A cylinder of length

L

and radius a has its axis coincident with the

x

-axis. The electric field in this region is

\vec{E} = 100 \hat{i}

unit. The magnitude of flux entering through the cylinder is

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 6

In a certain region of space, there exists a uniform electric field of value

2 \times 10^{4} V m^{- 1}

in

+ Z

direction. A rectangular coil of

5 cm \times 15 cm

is placed in the

x y

plane. The electric flux through the coil is