# Electrostatics (NEET Physics): Questions 31 - 35 of 109

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## Question number: 31

» Electrostatics » Coulomb's Law

MCQ▾

### Question

An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius r. Calculate the Coulomb force F between proton and electron. (here

### Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

## Question number: 32

» Electrostatics » Electric Potential

MCQ▾

### Question

A particle A has charge +q and a particle B has charge +4q with each of them having the same mass m. When allowed to fall from rest through the same electric potential difference, the ratio of their speed will become

### Choices

Choice (4) Response

a.

1: 2

b.

4: 1

c.

2: 1

d.

1: 4

## Question number: 33

» Electrostatics » Electric Potential

MCQ▾

### Question

A charge (-q) and another charge (+Q) are kept at two points A and B respectively. Keeping the charge (+Q) fixed at B, the charge (-q) at A is moved to another point C such that ABC forms an equilateral triangle of side l. The net work done by electrostatic field in moving the charge (-q)

### Choices

Choice (4) Response

a.

b.

Zero

c.

d.

## Question number: 34

» Electrostatics » Gauss's Law

MCQ▾

### Question

A sphere of radius R has a uniform distribution of electric charge in its volume. At a distance x from its center, for x < R, the electric field is directly proportional to

### Choices

Choice (4) Response

a.

x

b.

x 2

c.

d.

## Question number: 35

» Electrostatics » Electrostatic Potential Energy

MCQ▾

### Question

When the separation between two charges is increased, the electric potential energy of the charges is,

### Choices

Choice (4) Response

a.

decreases

b.

may increase or decrease

c.

Remains the same

d.

Increases

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