In LCR circuits,why do directly sum up voltages using Kirchoff's Laws when voltage is out of phase?
In resistors,both voltage and current are in same phase.
In capacitors,current leads voltage.
In inductors,voltage leads current.
Why do you directly add them?And if you call voltage a scalar,why do you give direction to voltage with phasor diagrams.
Please also explain why the same logic is used in CR and LR circuits.

Thanks

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