# ELECTROSTATICS

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ELECTROSTATICS - Topic Wise Multiple Choice Questions (MCQ)

Electrostatics is a branch of physics that studies electric charges at rest. Since classical physics, it has been known that some materials such as amber attract lightweight particles after rubbing.

1 ) Free Physics Questions Online Mock Test Series By Cracktest

When a Piece of Polythene is rubbed with wool, a charge of – 2 × 10–7 is developed on polythene. The mass transferred to polythene is …. kg.

Select correct option from following options

(A) 11.38 × 10–19                     (B) 5.69 × 10–19

(C) 2.25 × 10–19                       (D) 9.63 × 10–19

A
B
C
D

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2 )

The protonic charge in 100 gm of water is ……. c

4.8 × 10^5
5.4 × 10^6
3.6 × 10^4
4.9 × 10^6

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3 )

A copper sphere of mass 2 gm contains about 2 × 1022 atoms. The charge on the nucleus of each atom is29e. What fraction of electrons removed from the sphere to give it a charge of 2μc?

2 × 10^–10
1.19 × 10^–12
1.25 × 10^–11
2.16 × 10^–11

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4 )

The rate of alpha particle falls on neutral sphere is 1012 per second. The time in which sphere gets charged by 2μc is ….…… sec

2.25
3.15
6.25
1.66

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5 )

A charge Q is divided into two parts and then they are placed at a fixed distance. The force between the two charges is always maximum when the charges are……

(Q/3), (Q/3)
(Q/2), (Q/2)
(Q/4), (3Q / 4)
(Q/5), (4Q / 5)

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