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

a.

b.

c.

d.

Edit

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

a.

b.

c.

d.

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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

a.

b.

c.

d.

Edit

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.

A Charged Particle Moves in a Helical Path

The ratio of the pinch to the radius R of the helical path is –

(December)

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

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)

Three Charges Located on a Circle

Choices

Choice (4)Response

a.

b.

c.

d.

Edit