Basic Parameters



i: instantaneous current (A), Io: maximum instantaneous current (A), T: period of the wave, f: frequency, λ: wavelength, c: speed of light







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Effective Current And Voltage





Ohm's Law Of AC Current Containing Only Resistance R






Containing Only Inductor L



ZL: inductive reactance






Containing Only Capacitor C



ZC: capacitive reactance






Containing R,L, And C In A Series



Z: impedance






Phase Angle




Power Factor




Real Power




Electrical Resonance











Changing Voltage With Transformers



N1, N2: number of turns in the primary coil and secondary coil; U1, U2: primary and secondary voltage; I1, I2: primary and secondary current