Electromagnetic Theory (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 5 - 7 of 68

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Question number: 5

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

Appeared in Year: 2012

MCQ▾

Question

Three charges are located on the circumference of a circle of radius R as shown in the figure below. The two charges Q subtend an angle 900 at the centre of the circle. The charge q is symmetrically placed with respect to the charges Q. If the electric field at the centre of the circle zero, what is the magnitude of Q? (December)

Three charges located on a circle

Three Charges Located on a Circle

In figure three charges are located on the circumference of a circle of radius R. The two charges Q subtend an angle 900 at the centre of the circle. The charge q is symmetrically placed with respect to the charges Q.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 6

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

Appeared in Year: 2014

MCQ▾

Question

A charged particle is at a distance d from an infinite conducting plane maintained at zero potential. When released from rest, the particle reaches a speed Equation at a distance Equation from the plane. At what distance from the plane will the particle reach the speedEquation ? (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 7

» Electromagnetic Theory » Interference

Appeared in Year: 2012

MCQ▾

Question

Consider the interference of two coherent electromagnetic waves whose electric field vectors are given by Equation and Equation where Equation is the phase difference. The intensity of the resulting wave is given byEquation , where Equation is the time average ofEquation . The total intensity is – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

0

d.

Equation

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