Electrostatics-Coulomb's Law (KVPY Stream-SA (Class 11) Physics): Questions 1 - 3 of 3

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Question number: 1

» Electrostatics » Coulomb's Law

MCQ▾

Question

The excess (equal in number) of electrons that must be placed on each of two small sphered 3 cm apart with force of repulsion between sphere to be 10-19 N, is

Choices

Choice (4) Response

a.

125

b.

625

c.

25

d.

50

Question number: 2

» Electrostatics » Coulomb's Law

MCQ▾

Question

The excess (equal in number) of electrons that must be placed on each of two small sphered 4.8 cm apart with force of repulsion between sphere to be 1.6 ⨯ 10-20 N, is –

Choices

Choice (4) Response

a.

400

b.

350

c.

275

d.

250

Question number: 3

» Electrostatics » Coulomb's Law

Appeared in Year: 2016

MCQ▾

Question

The radius of a nucleus is given by r0A13 where r0=1.3×1015m and A is the mass number of the nucleus. The Lead nucleus has A=206 . The electrostatic force between two protons in this nucleus is approximately –

Choices

Choice (4) Response

a.

1017N

b.

102N

c.

107N

d.

1012N

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