Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 18

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A point charge $q_{1}$ exerts an electric force on a second point charge $q_{2} .$ If third charge $q_{3}$ is brought near, the electric force of $q_{1}$ exerted on $q_{2}$

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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 19

Three charges

+ 4 q

,

Q

and

q

are placed in a straight line of length

l

at points at distances

0, \frac{l}{2}

and

l

respectively. What should be

Q

in order to make the net force on

q

to be zero?

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 20

A particle of mass

m

and carrying charge

- q_{1}

is moving around a charge

+ q_{2}

along a circular path of radius

r .

Find period of revolution of the charge

- q_{1}

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 21

Consider three point objects

P, Q

and

R . P

and

Q

repel each other, while

P

and

R

attract. What is the nature of force between

Q

and

R ?

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 22

The electric field intensity at a point in vacuum is equal to

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

A sphere of radius

r

has electric charge uniformly distributed in its entire volume. At a distance

d

from the centre inside the sphere

(d < r)

the electric field intensity is directly proportional to

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 24

The electric field at

2 R

from the centre of a uniformly charged non-conducting sphere of radius

R

is

E .

The electric field at a distance

\frac{R}{2}

from the centre will be

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 25

In a uniform electric field if a charge is fired in a direction different from the line of electric field then the trajectory of the charge will be a

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 26

A positively charged pendulum is oscillating in a uniform electric field pointing upwards. Its time period as compared to that when it oscillates without electric field