Electromagnetic Theory [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 61 - 66 of 88

Access detailed explanations (illustrated with images and videos) to 659 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access, Unlimited Time, on Unlimited Devices!

View Sample Explanation or View Features.

Rs. 450.00 -OR-

How to register? Already Subscribed?

Question 61

Appeared in Year: 2008

Question

MCQ▾

A circular disc of radius on the plane has a surface charge density . The electric dipole moment of this charge distribution is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 62

Electromagnetic Theory

Appeared in Year: 2007

Question

MCQ▾

Can the following scalar and vector potential describe an electromagnetic field?

Where is a constant.

Choices

Choice (4)Response

a.

Yes, in the Coulomb gauge

b.

No

c.

Yes, provided

d.

Yes, in the Lorentz gauge

Passage

Consider two concentric conducting spherical shells with inner and outer radii and as shown in the figure. Both the shells are given amount of positive charges.

Two Concentric Conducting Spherical Shells

Question 63 (1 of 2 Based on Passage)

Appeared in Year: 2008

Question

MCQ▾

In order to have equal surface charge densities on the outer surface of both the shells, the following conditions should be satisfied –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 64 (2 of 2 Based on Passage)

Appeared in Year: 2008

Question

MCQ▾

The electric field in different regions are –

Choices

Choice (4)Response

a.

for for

for ; for

b.

for ; for

for ; for

c.

for ; for

for ; for

d.

for ; for

for for

Passage

A dielectric sphere of radius carries polarization , where is the distance from the centre and is a constant. In the spherical polar coordinate system are the unit vectors.

Question 65 (1 of 2 Based on Passage)

Electromagnetic Theory

Appeared in Year: 2006

Question

MCQ▾

The bound volume charge density inside the sphere at a distance from the centre is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 66 (2 of 2 Based on Passage)

Electromagnetic Theory

Appeared in Year: 2006

Question

MCQ▾

The electric field inside the sphere at a distance from the centre is –

Choices

Choice (4)Response

a.

b.

c.

d.

Developed by: