Electromagnetic Theory (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 44 - 47 of 68

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Question number: 44

» Electromagnetic Theory » Lorentz Invariance of Maxwell's Equation

Appeared in Year: 2012

MCQ▾

Question

Which of the following quantities is Lorentz invariant? (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 45

» Electromagnetic Theory » Radiation- From Moving Charges

Appeared in Year: 2012

MCQ▾

Question

When a charged particle emits electromagnetic radiation, the electric field Equation and the Poynting vector Equation at a large distance Equation from the emitter vary as Equation and Equation respectively. Which of the following choices for Equation and Equation are correct? (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 46

» Electromagnetic Theory » Scalar and Vector Potentials

Appeared in Year: 2012

MCQ▾

Question

The vector potential Equation due to a magnetic moment Equation at a point Equation is given by Equation . If Equation is directed along the positive z – axis, the x – component of the magnetic field, at the point Equation , is – (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 47

» 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 Equation , as shown in the figure

Three charges at the vertices of triangle

Three Charges at the Vertices of Triangle

In figure charges Q, Q and – 2Q are placed on the vertices of an equilateral triangle ABC of sides of length a.

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

Choices

Choice (4) Response

a.

Equation

b.

0

c.

Equation

d.

Equation

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