Electromagnetic Theory (CSIR Physical Sciences): Questions 1 - 4 of 57

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Question number: 1

» Electromagnetic Theory » Scalar and Vector Potentials

Appeared in Year: 2013

MCQ▾

Question

If the electric and magnetic field are unchanged when the vector potential Equation changes (in suitable units) according to Equation , where Equation then the scalar potential Equation must simultaneously change to – (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 2

» Electromagnetic Theory » Magnetostatics » Ampere's Theorem

Appeared in Year: 2013

MCQ▾

Question

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.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 3

» Electromagnetic Theory » Gauge Invariance

Appeared in Year: 2013

MCQ▾

Question

The components of a vector potential Equation are given by,

Equation

Where k is a constant. The three component of the electric field are – (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 4

» Electromagnetic Theory » Dynamics of Charged Particles in Static Electromagnetic Field

Appeared in Year: 2014

MCQ▾

Question

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

A Charged Particle Moves in a Helical Path

Figure shows a charged particle moves in a helical path under the influence of a constant magnetic field.

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

(December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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