Electromagnetic Theory [CSIR (Council of Scientific & Industrial Research) Physical Sciences]: Questions 1 - 5 of 96
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Question 1
Appeared in Year: 2013
Question MCQ▾
If the electric and magnetic field are unchanged when the vector potential changes (in suitable units) according to , where then the scalar potential must simultaneously change to – (June)
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 2
Appeared in Year: 2013
Question MCQ▾
The force between two long and parallel wires carrying I1 and I2 and separated by distance D is proportional to – (December)
Choices
Choice (4) | Response | |
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b. | ||
c. | ||
d. |
Question 3
Appeared in Year: 2013
Question MCQ▾
The components of a vector potential are given by,
Where k is a constant. The three component of the electric field are – (June)
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 4
Appeared in Year: 2014
Question MCQ▾
A charged particle moves in a helical path under the influence of a constant magnetic field. The initial velocity is such that the component along the magnetic field is twice the component in the plane normal to magnetic field.
The ratio of the pinch to the radius R of the helical path is –
(December)
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 5
Appeared in Year: 2012
Question MCQ▾
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)
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |