## 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 261

These relations can be used to obtain approximate

where the general case is too hard to solve exactly while special cases are easy

to do. As an example, consider the circle carrying a current. We found the

induction ...

These relations can be used to obtain approximate

**expressions**for B in caseswhere the general case is too hard to solve exactly while special cases are easy

to do. As an example, consider the circle carrying a current. We found the

induction ...

Page 306

In this way, we obtain a commonly found

energy l/m0 = /j(r)-A0(r)rfT (19-35) where the integral is taken over the whole

volume containing the currents J of the system of interest. As in Section 8-4, we

will ...

In this way, we obtain a commonly found

**expression**for the magnetic interactionenergy l/m0 = /j(r)-A0(r)rfT (19-35) where the integral is taken over the whole

volume containing the currents J of the system of interest. As in Section 8-4, we

will ...

Page 370

Roald K. Wangsness.

1 centimeter apart will repel each other with a force of 1 dyne; the unit of charge

denned in this way is called a statcoulomb (from electrosfa/ic). The unit of current

...

Roald K. Wangsness.

**expression**in (23-6) that two equal unit charges a distance1 centimeter apart will repel each other with a force of 1 dyne; the unit of charge

denned in this way is called a statcoulomb (from electrosfa/ic). The unit of current

...

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angle assume axes axis becomes bound charge boundary conditions bounding surface calculate capacitance cavity charge density charge distribution charge q circuit conducting conductor const constant corresponding Coulomb's law current density curve cylinder dielectric dipole direction displacement distance divergence theorem electric field electromagnetic electrostatic energy equal equipotential evaluate example Exercise expression field point flux free charge function given illustrated in Figure induction infinitely long integral integrand Laplace's equation line charge located Lorentz transformation magnetic magnitude Maxwell's equations normal component obtained origin parallel plate capacitor particle perpendicular point charge polarized position vector potential difference quadrupole quantities rectangular coordinates region result satisfy scalar potential shown in Figure situation solenoid solution sphere of radius spherical surface charge surface charge density surface integral tangential components theorem total charge vacuum vector potential velocity volume write written xy plane zero