Principles of Electricity and Electromagnetism |
From inside the book
Results 1-3 of 73
Page 62
... volume the energy associated with a volume dv is -p . E dv and integrating over the total volume occupied by the dielectric • U = vPv . E dv P. · grad V + V div p . , the energy As E - grad V and div ( p , V ) may be written - = U ...
... volume the energy associated with a volume dv is -p . E dv and integrating over the total volume occupied by the dielectric • U = vPv . E dv P. · grad V + V div p . , the energy As E - grad V and div ( p , V ) may be written - = U ...
Page 69
... volume integral may be written U = √D . E dv ( 2.33 ) by the aid of Eq . ( 1.13 ) . Thus the energy per unit volume in terms of the field and displacement is given by D. E. If the medium is linear and isotropic , Eq . ( 2.33 ) reduces ...
... volume integral may be written U = √D . E dv ( 2.33 ) by the aid of Eq . ( 1.13 ) . Thus the energy per unit volume in terms of the field and displacement is given by D. E. If the medium is linear and isotropic , Eq . ( 2.33 ) reduces ...
Page 190
... volume occupied by a unit charge of electrons in the vapor state . Equation ( 6.4 ) then becomes - — E = pV – TV - dp dT ( 6.13 ) If n is the number of electrons per unit volume above the surface and e is the charge per electron V , the ...
... volume occupied by a unit charge of electrons in the vapor state . Equation ( 6.4 ) then becomes - — E = pV – TV - dp dT ( 6.13 ) If n is the number of electrons per unit volume above the surface and e is the charge per electron V , the ...
Other editions - View all
Common terms and phrases
alternating current alternating-current ampere amplifier amplitude angle angular anode antenna applied approximately armature assumed atom axis calculated capacity cathode cell characteristic charge circuit coefficient coil component condenser conducting conductor considered constant curl current flowing curve deflection density determined dielectric dielectric constant direct-current direction dynamic resistance effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer grad harmonic hence impedance induction integral ions known length linear load magnetic field magnetic moment magnitude maximum measured meter negative obtained ohms oscillations output parallel phase plane plate current positive potential difference potentiometer quantities R₁ radiation radius ratio reactance region represents resistance resonant rotation scalar shown in Fig solution surface temperature terminals theorem torque transconductance triode tube unit vacuum tube vector velocity voltage volts wave wire written zero