# Electromagnetic Theory [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 67 - 70 of 88

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## Question 67

Electromagnetic Theory

Appeared in Year: 2008

### Question

MCQ▾

A parallel plate capacitor is being discharged. What is the direction of the energy flow in terms of the Poynting vector in the space between the plates?

### Choices

Choice (4)Response

a.

b.

c.

Along the wire in the positive axis

d.

Circumferential

## Question 68

Electromagnetic Theory

Appeared in Year: 2007

### Question

MCQ▾

An electromagnetic wave with is traveling in free space and crosses a disc of radius placed perpendicular to the axis. If , the average power, in Watt, crossing the disc along the direction is –

### Choices

Choice (4)Response

a.

120

b.

60

c.

30

d.

270

## Question 69

Appeared in Year: 2007

### Question

MCQ▾

A charged capacitor (C) is connected in series with an inductor (L) . When the displacement current reduces to zero, the energy of the LC circuit is –

### Choices

Choice (4)Response

a.

Stored entirely in its electric field

b.

c.

Stored entirely in its magnetic field

d.

Distributed equally among its electric and magnetic fields

## Question 70

Electromagnetic Theory

Appeared in Year: 2008

### Question

MCQ▾

A nonrelativistic charged particle moves along the positive axis with a constant positive acceleration . The particle is at the origin at . Radiation is observed at at a distant point on the axis. Which one of the following statement is correct?

### Choices

Choice (4)Response

a.

The radiation is plane polarized with polarization parallel to the plane along a line inclined to the axis

b.