Current I=U/Z, be careful with it. Pure complex number operation, because U phase is 0, so U is real number10;
? Active power is the power of resistance, which is calculated by Joule heat formula, and the square of effective current value is multiplied by resistance;
The apparent power is the total power. The product of effective voltage and effective current.
Relationship among Reactive Power, Active Power and Apparent Power
The real part of complex power is average power (active power) and the imaginary part is reactive power. It is a compound term, and the corresponding power obtained above can be directly added.
After calculating the current, we know the phase difference between current and voltage, which can be directly calculated by P=IUCOSφ and Q=IUsinφ.