Impedance is usually written in equations as Z. Impedance is the real resistance (usualyl referred to as R), and the imaginary / reactive opposition (using an imaginary number 'i' or 'j', depending on your area of study). Z = R + j*n, where 'n' is the reactive opposition.
Additional AnswerCurrent, in an A.C. circuit, is opposed by the resistance(R) of that circuit and the reactance (X) of that circuit. Reactance may be 'inductive reactance' (XL) or 'capacitive reactance' (XC) -depending on the nature of the circuit.
Inductive reactance is directly proportional to the supply frequency; capacitive reactance is inversely proportional to the supply frequency; resistance is independent of frequency.
Impedance (Z) is the vector sum (not algebraic sum) of a circuit's resistance and reactance, and may be considered as the total opposition to the flow of A.C. current.
Resistance, reactance, and impedance are each measured in ohms.
Z = SQR (R² + XL²)
Where:
Z = Impedance (ohm)
R = Resistance (ohm)
XL= Inductance reactance (ohm)
Impedance is an AC resistance.
you can use an impedence converter or a voltage follower
Digital voltmeter has high input impedence.
A: Yes it does since the break down is not exactly very linear.
the quality factor for choke coil is impedence divided by resistance in a given circuit
1.transmission and reception 2.impedence matching 3.sensor to em waves 4.suppressing
It can be used in 3 configurations, common emmiter, common base, common collector, in which common emitter is most widely used configuration.Its a 3 terminal device.It can be use as an amplifiersIt is use in all digital logic familiesHigh input impedence; low output impedence
Newer heard the word "impedence". An output impedance is an AC resistance at the output of an electronic device.
Max efficiency of energy transfer can only occur when impedence source matches the impedence of the load.
A buffer amplifier can be used to transform high input impedence to low output impedence, or vice-versa.
Resistance divided by impedence
480 volts and 60ohm impedence current = volt/impedence current=480/60 current=8ampeares
Yes, you can plug an electric guitar into an acoustic amplifier. But I would suggest that you don't play at a high volume for a long period of time of the difference in impedence - an acoustic guitar (and bass and vocals) is low impedence, where an electric guitar (& keyboard) is high impedence.
remais same.......
Impedence
to calculate impedence of power supply
This question makes no sense, however, one answer may be to determine the impedence of the computer. The conductivity would be the reciprocal of the impedence. At full power a computer with a 200 amp power supply would have an impedence of approximately .02 ohms. If so, the conductivity would be 50 mhos. Difficult and confusing question.... best I can do.
reflected impedence is a tool to analyse resonant coupling..