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

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If there are $100$ free electrons excess on a body, then what will be net charge on it?

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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 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

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 7

Five identical charges

+ q

are placed at five corners of a regular hexagon of side

' I'

. Find the magnitude of electric field at centre

(where k = \frac{1}{4 π ε_{0}})

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 8

The electric field

(E)

due to infinite charged sheet varies as distance

' r'

is given by

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 9

When an electric dipole having dipole moment

\vec{p}

is placed in an uniform electric field

\vec{E}

, the torque

\vec{τ}

acting on the dipole is