SOLVED: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, Z=(V)/(I) . If the voltage across acircuit element is 18 i volts and the current through the element is 3-4 i amperes, determine the impedance.