## Principles of Electricity and Electromagnetism |

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Page 17

The integral over the

outside the

even ...

The integral over the

**surface**is then the total solid angle subtended by the**surface**at the point occupied by q. It can be seen from Fig. 1.11 that if q liesoutside the

**surface**, each infinitesimal conical solid angle ide cuts the**surface**aneven ...

Page 18

Consider a hypothetical closed Gaussian

conductor, as at the left in Fig. 1.12. Since the electric field at every point on this

...

Consider a hypothetical closed Gaussian

**surface**lying completely inside aconductor, as at the left in Fig. 1.12. Since the electric field at every point on this

**surface**is zero, it can enclose no net charge. As this hypothetical**surface**can be...

Page 189

Another thermal effect of great importance is the actual liberation of electrons

from a heated

electrons within a metal are very large, but the bounding

mathematically ...

Another thermal effect of great importance is the actual liberation of electrons

from a heated

**surface**. The forces tending to retain the cloud of conductionelectrons within a metal are very large, but the bounding

**surface**is notmathematically ...

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alternating current alternating-current amplitude angle angular velocity anode antenna applied approximately armature assumed atom axis calculated capacity cathode centimeter characteristic circuit coefficient coil component condenser conducting conductor considered curl current flowing curve deflection density determined dielectric constant direct-current direction discharge displacement distance effective electric field electromotive force electrons electrostatic element energy equal equation ferromagnetic flux force frequency function galvanometer given grad grid hence hysteresis impedance induction integral ions known Laplace's equation linear load magnetic field magnetic moment magnitude maximum measured meter motor negative normal obtained ohms oscillations output parallel phase plane plate polarization positive potential difference potentiometer produced proportional quantity radiation radius ratio reactance region represents resistance resonant rotation Show shown in Fig solenoid solution substance surface temperature terminals theorem torque transformer tube unit vector voltage volts wave wire written zero