Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 84

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If $n$ drops of potential $V$ merge, find new potential on the big drop.

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Important Questions on Electrostatics

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 85

Two conducting spheres of redii

R_{1}

and

R_{2}

respectively are charged and joined by a wire. The ratio of electric fields of spheres is

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 86

Charge on a sphere of radius

R

is

q

and on the sphere of radius

2 R

is

- 2 q .

If these spheres are connected through a conducting wire then, amount of charge flown through a wire will be:

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 87

Two identical conducting spheres

R

and

S

have negative charges

Q_{1}

and

Q_{2}

respectively, but

Q_{1} \neq Q_{2} .

The spheres are brought to touch each other and then kept in their original positions, now the force between them is

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 88

27

smaller drop combine to form a bigger drop if potential on smaller drop is

V

then potential on bigger drop will be-

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 89

Find the electrostatic potential at a point

P

at a distance

\frac{R}{2}

from the centre of the shell is, when a thin spherical conducting shell of radius

R

has a charge

q

. Another charge

Q

is placed at the centre of the shell.

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 90

A charged oil drop is suspended in uniform field of

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

so that it neither falls nor rises. The charge on the drop will be:

(Take the mass of the charge

= 9.9 \times 10^{- 15} kg a n d g = 10 m s^{- 2})

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 91

Two thin wire rings each having a radius

R

are placed at a distance

d

apart with their axes coinciding. The charges on the two rings

+ q

and

- q

. The potential difference between the centres of the two rings is

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 92

An electric charge

10^{- 3} μC

is placed at the origin

(0, 0)

of

(x - y)

co-ordinate system. Two points

A

and

B

are situated at

(\sqrt{2}, \sqrt{2})

and

(2, 0)

respectively. The potential difference between the points

A

and

B

will be