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Chapter One: Vector Analysis The use of vectors and vector analysis ...

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Electromagnetic <strong>The</strong>orem<br />

(Dr. Omed Ghareb Abdullah) University <strong>of</strong> Sulaimani –College <strong>of</strong> Science – Physics Department<br />

<strong>The</strong> infinitesimal displacements in cylindrical coordinates are:<br />

<br />

<br />

<br />

Thus, the general infinitesimal displacement is:<br />

<br />

<strong>The</strong> infinitesimal volume element , in cylindrical coordinates, is:<br />

<br />

<strong>The</strong> infinitesimal surface elements , in cylindrical coordinates, is:<br />

<br />

<strong>The</strong> <strong>vector</strong> derivatives in cylindrical coordinates are:<br />

Gradient:<br />

Divergence:<br />

Curl:<br />

Laplacian:<br />

V 1 <br />

∙V 1 <br />

T ∂T<br />

∂ 1 <br />

∂<br />

∂ 1 <br />

∂T<br />

∂φ ∂T<br />

∂z <br />

∂<br />

∂φ ∂ ∂z <br />

∂ <br />

∂ ∂ <br />

∂z ∂ <br />

∂z ∂ <br />

∂ 1 ∂<br />

∂ ∂ <br />

∂ <br />

T 1 <br />

∂<br />

∂<br />

∂T<br />

<br />

∂ 1 ∂ T<br />

∂φ ∂ T<br />

∂z <br />

Problem:<br />

a) Fide the divergence <strong>of</strong> the function:<br />

V 2sin φ sinφcosφ 3z <br />

45

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