KTU Engineering Physics Module 3 Guass Law, Amperes Law, Faradays Law, Maxwells Equation, EM Wave equation, Poyntings theorem

1. Engineering Physics
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2. Contents
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 Del operator
 Grad, Div, Curl
 Gauss Divergence theorem and Stokes theorem
 Equation of continuity
 Maxwell’s Equation
 Displacement Current
 E M Wave in free space
 Poynting’s Vector

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Vector Operators

4. Gradient Of a Scalar field
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PHYSICAL INTERPRETATION OF
GRADIENT
Gradient represent the direction of
maximum Change in a field

6. Temperature gradient
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Divergence of Del operator is the dot product of
Del with a vector function. If A is a function
represented by A = i Ax + j Ay + k Az .
Divergence of vector A isd given by

8. Physical Significance of Divergence
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18. Maxwell’s Equations
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1. Gauss’s Law of Electric field
2. Gauss’s Law of Magnetism
3. Faraday’s Law Of Electromagentic
Induction
4. Ampere’s Circuital Law ( modified)

19. Gauss’s Law of Electric field

20. Guass’s Law (continued….)
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21. Gauss’s Law of Magnetism
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22. Faraday’s Law Of Electromagentic induction
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23. Ampere’s Circuital Law
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The total magnetic flux in a closed loop arround a c
urrent carrying conductor is
but
1

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25. Inconsistency of Ampere,s law
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By equation of continuity

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27. Displacement Current
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and

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