Electromagnetic Theory (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 58  61 of 68
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Question number: 58
» Electromagnetic Theory » Electrostatics: Gauss's Law and Its Applications
Appeared in Year: 2016
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: 59
» Electromagnetic Theory » Laplace and Poisson Equations
Appeared in Year: 2016
Question
The Laplace transform of
is: (December)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 60
» Electromagnetic Theory » Electromagnetic Waves in Free Space
Appeared in Year: 2016
Question
A particle with charge moves with a uniform angular velocity in a circular orbit of radius in the plane, around a fixed charge , which is at the centre of the orbit at . Let the intensity of radiation at the point be and at be . The ratio , for , is: (December)
Choices
Choice (4)  Response  

a. 


b. 


c.  8 

d.  4 

Question number: 61
» Electromagnetic Theory » Dynamics of Charged Particles in Static Electromagnetic Field
Appeared in Year: 2016
Question
Suppose that free charges are present in a material of dielectric constant and resistivity . Using Ohm’s law and the equation of continuity for charge, the time required for the charge density inside the material to decay by is closest to: (December)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

