## Electromagnetic fieldsThis revised edition provides patient guidance in its clear and organized presentation of problems. It is rich in variety, large in number and provides very careful treatment of relativity. One outstanding feature is the inclusion of simple, standard examples demonstrated in different methods that will allow students to enhance and understand their calculating abilities. There are over 145 worked examples; virtually all of the standard problems are included. |

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Page 19

Hence we need to supplement (1-52) with a convention that will tell us what to do

; there are two cases to be considered. First, da may be part of an open surface,

that is, it is bounded by a closed

Hence we need to supplement (1-52) with a convention that will tell us what to do

; there are two cases to be considered. First, da may be part of an open surface,

that is, it is bounded by a closed

**curve**C; a page of this book is an example of ...Page 30

Roald K. Wangsness. contributions of all of the strips, the contribution from each

strip will be Axdsx from its share of the bounding

line integral of Axdsx over the whole

...

Roald K. Wangsness. contributions of all of the strips, the contribution from each

strip will be Axdsx from its share of the bounding

**curve**; the final result will be theline integral of Axdsx over the whole

**curve**C. In other words, we have found that...

Page 382

If we now continue this process of decreasing H to — Ht, and then reverse

direction and increase it back to + //,, the B versus H

the ...

If we now continue this process of decreasing H to — Ht, and then reverse

direction and increase it back to + //,, the B versus H

**curve**becomes the closed**curve**known as a hysteresis loop. If we had gone out to H2>H1 before startingthe ...

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angle assume axis becomes bound charge boundary conditions bounding surface calculate capacitance charge density charge distribution charge q circuit conductor consider const constant corresponding Coulomb's law cross section current density current element curve cylinder defined dielectric direction displacement distance electric field electromagnetic electrostatic energy equal equipotential evaluate example Exercise expression field point flux force free charge free currents frequency function given illustrated in Figure induction infinitely long integral integrand Laplace's equation line charge located Lorentz Lorentz transformation magnitude material Maxwell's equations molecule normal components obtained origin particle perpendicular plane wave point charge polarized position vector potential difference propagation properties quadrupole quantities radiation region relation result satisfy scalar potential shown in Figure situation solenoid spherical substitute surface current surface integral tangential components total charge unit vacuum vector potential velocity volume write written xy plane zero