# Electromagnetic Theory-Electrostatics: Gauss's Law and Its Applications (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 11 - 13 of 13

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## Question number: 11

» Electromagnetic Theory » Electrostatics: Gauss's Law and Its Applications

Appeared in Year: 2012

MCQ▾

### Question

Charges Q, Q and -2Q are placed on the vertices of an equilateral triangle ABC of sides of length , as shown in the figure

The dipole moment of this configuration of charges, irrespective of the choice of origin, is – (June)

### Choices

Choice (4) Response

a.

b.

0

c.

d.

## Question number: 12

» Electromagnetic Theory » Electrostatics: Gauss's Law and Its Applications

Appeared in Year: 2016

MCQ▾

### Question

The charge per unit length of a circular wire of radius in the plane, with its centre at the origin, is , where is a constant and the angle is measured from the positive axis. The electric field at the centre of the circle is: (December)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 13

» Electromagnetic Theory » Electrostatics: Gauss's Law and Its Applications

Appeared in Year: 2016

MCQ▾

### Question

Two uniformly charged insulating solid sphere and , both of radius , carry total charges and , respectively. The sphere are placed touching each other as shown in the figure.

If the potential at the centre of the sphere is and that at the centre of is , then the difference is: (December)

### Choices

Choice (4) Response

a.

b.

c.

d.

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