# Electromagnetic Theory-Scalar and Vector Potentials (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1 - 5 of 10

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## Question number: 1

» Electromagnetic Theory » Scalar and Vector Potentials

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Appeared in Year: 2013

MCQ▾

### Question

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.

## Question number: 2

» Electromagnetic Theory » Scalar and Vector Potentials

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Appeared in Year: 2012

MCQ▾

### Question

The magnetic field corresponding to the vector potential where is a constant vector, is – (June)

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 3

» Electromagnetic Theory » Scalar and Vector Potentials

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Appeared in Year: 2014

MCQ▾

### Question

A scalar and vector potential and are determine up to a gauge transformation and , where is an arbitrary continuous and differential function of and . If we further impose the Lorenz gauge condition,

Then a possible choice for the gauge function is – (Where are nonzero constants with ) (December)

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 4

» Electromagnetic Theory » Scalar and Vector Potentials

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Appeared in Year: 2011

MCQ▾

### Question

For constant uniform electric and magnetic fields and , it is possible to choose a gauge such that the scalar potential and vector potential are given by, - (June)

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 5

» Electromagnetic Theory » Scalar and Vector Potentials

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Appeared in Year: 2013

MCQ▾

### Question

The components of a vector potential are given by,

Where k is constant. The three components of the electric field are – (June – 2013)

### Choices

Choice (4)Response

a.

b.

c.

d.

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