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, Upper Z equals StartFraction Upper V Over Upper I EndFraction . If the voltage across a circuit element is 20 plus 10 i volts and the current through the element is 4 minus 2 i ​amperes, determine the impedance. Question content area bottom Part 1 The impedance is Zequals

enter your response here. ​(Type your answer in the form aplusbi​.)