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David
Lv 4
David asked in Science & MathematicsEngineering · 6 years ago

Help with Electrical Impedance?

I have used the equations Z = V/I (impedance = voltage / current at the lowest current value) and Z = L/CR (where C=L/(r^2 + XL^2)) (impedance = inductance / capacitance x resistance) to calculate the impedance but both give me different answers.

Why are the two answers different although they are working out the same thing?

I would be very grateful if someone could help me resolve this as i have no idea which is correct.

1 Answer

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  • Rick
    Lv 7
    6 years ago

    Your equations are wrong; Z=R+jwL-j/(wC)

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