How to use in-sentence of “impedance”:
– The use of the imaginary number “j” makes the mathematics much simpler, it allows to calculate the total impedance the same way as it’s done with resistors, for example a resistor plus an impedance in series is R+Z, and in parallel it’s.
– Resultingly the parallel connected circuit will act as band-stop filter having infinite impedance at the resonant frequency of the LC circuit.
– The units for the resistance and the impedance are the same, the ohm with the symbol.
– Across a resistor, both the voltage and the current goes up and down at the same time, they are said to be in phase, but with an impedance it’s different, the voltage is shifted by 1/4 wavelength behind the current in a capacitor, and forward in an inductor.
– First consider the Electrical impedance of the series LC circuit.
– Typical impedance is 8 ohms.
– Amplifiers ability to use low impedance speakers may vary.
