Principles of Electricity and Electromagnetism |
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Page 61
... respect to the angular variable of Fig . 2.12 . As UpE cos 0 TpE sin 0 ( 2.15 ) ૧ P E FIG . 2.12 . - Dipole of mo- a field E. ment p = qa in Energy of the dipole in the field , Up . E The torque may be considered as a vector in the ...
... respect to the angular variable of Fig . 2.12 . As UpE cos 0 TpE sin 0 ( 2.15 ) ૧ P E FIG . 2.12 . - Dipole of mo- a field E. ment p = qa in Energy of the dipole in the field , Up . E The torque may be considered as a vector in the ...
Page 294
... respect to an unprimed variable is equal in magnitude but opposite in sign to the analogous derivative with respect to a primed variable . Thus div A == Si .. grad ' -μο 4π On rewriting the integrand by means of the identity dv div ...
... respect to an unprimed variable is equal in magnitude but opposite in sign to the analogous derivative with respect to a primed variable . Thus div A == Si .. grad ' -μο 4π On rewriting the integrand by means of the identity dv div ...
Page 462
... respect to X2 equal to zero yields X2 = w2M2 R2 + X2X1 ( 14.9 ) This means that the secondary must be tuned to a frequency different from its natural frequency in order to obtain the largest possible current . If the primary circuit ...
... respect to X2 equal to zero yields X2 = w2M2 R2 + X2X1 ( 14.9 ) This means that the secondary must be tuned to a frequency different from its natural frequency in order to obtain the largest possible current . If the primary circuit ...
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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