What is the conjugate impedance of 30+j40?

In summary, the total impedance of 30+j40 is 50ohm and the conjugate impedance is 30-j40. The magnitude of the complex conjugate impedance is the same as the original impedance. The solution to find the magnitude is the square root of (302+402).
  • #1
KnightMars
2
0
Urgent! About Impedance

the total ohm of this impedance ( 30+j40 ) is 50ohm.
but wat is the conjugate impedance ?? 30-j40? total ohm is wat?

30+j40 is 50ohm
solution is square root of (302+402)
 
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  • #2
Welcome to PF!

Hi KnightMars! Welcome to PF! :smile:
KnightMars said:
the total ohm of this impedance ( 30+j40 ) is 50ohm.
but wat is the conjugate impedance ?? 30-j40? total ohm is wat?

30+j40 is 50ohm
solution is square root of (302+402)

Yes, the complex conjugate of 30 + 40 j is 30 - 40j.

(you simply replace j by -j)

The magnitude of the complex conjugate impedance is always the same as the magnitude of the original impedance (in this case, 50 Ω). :wink:
 
  • #3


ok ths ^^ done my homework ^^ hehe
 

What is impedance?

Impedance is a measure of how much a circuit or object resists the flow of electrical current. It is represented by the symbol Z and is measured in ohms (Ω).

Why is impedance important?

Impedance is important because it affects the performance of electrical circuits and devices. It can impact the efficiency, stability, and overall function of a system.

What factors affect impedance?

The factors that affect impedance include the material the circuit is made of, the length and thickness of the wires, the frequency of the current, and the temperature of the circuit.

How is impedance calculated?

Impedance is calculated using the formula Z = R + jX, where R is the resistance and X is the reactance. Reactance is the measure of how much a circuit resists the change in current due to capacitance or inductance.

What is the difference between impedance and resistance?

Resistance is the measure of how much a circuit resists the flow of direct current, while impedance takes into account the effects of both resistance and reactance on the flow of alternating current.

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