## 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 dw cuts the**surface**aneven ...

Page 18

CHAR Cavity ussiga GOU face

Gaussian

. Since the electric field at every point on this

net ...

CHAR Cavity ussiga GOU face

**surface**( a ) Consider a hypothetical closedGaussian

**surface**lying completely inside a conductor , as at the left in Fig . 1 . 12. Since the electric field at every point on this

**surface**is zero , it can enclose nonet ...

Page 240

In the absence of the field an electron starting at a distance a from the

must possess an energy ey to leave the cathode ; in the presence of the field the

electron need only possess an energy ey ' in order to surmount the potential ...

In the absence of the field an electron starting at a distance a from the

**surface**must possess an energy ey to leave the cathode ; in the presence of the field the

electron need only possess an energy ey ' in order to surmount the potential ...

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angle applied approximately assumed atom axis becomes calculated capacity carrying cell characteristic charge circuit closed coil component condition conducting conductor connected considered constant curve density depends determined dielectric difference direction discharge discussion distance effective electric electrons element energy equal equation evident expression factor field flow flux force frequency function galvanometer given grid hence impedance important increases indicated induction integral ions known length limited linear load losses magnetic magnetic field magnitude maximum means measured mechanical metal meter method negative normal obtained oscillations parallel path period phase placed plate positive potential present produced proportional quantities radius ratio reduced region relation represents resistance respect result rotation seen separation Show shown simple solution space surface temperature terminals transformer tube unit vector volts volume wave wire written zero