Electrical Circuits The impedance Z, in ohms, of a circuit element is defined as the ratio...

Electrical Circuits The impedance Z, in ohms, of a circuit element is defined as the ratio of the phasor voltage V, in volts, across the element to the phasor current I, in amperes, through the elements. That is, . If the voltage across a circuit element is 18 + i volts and the current through the element is 3 – 4 i amperes, determine the impedance.