Cases of other modes of operation of the RLC circuit

If XL> XC ie


U is ahead of I, so the circuit is actively inductive.

the voltage on the coil is greater than the voltage on the capacitor.

Vector diagram


If XL
lags behind I, then the circuit has an active-capacitive character
the voltage on the capacitor is greater than the voltage on the coil.

Vector diagram

Parallel connection of elements in a sinusoidal current circuit


At the input of a parallel circuit voltage U

Ohm's law



Equivalent branch resistances:


We write the equivalent conductivity:



according to the first Kirchhoff law:


Triangles of conductivity and currents
algebraic form

G - the real part, the active component
B - imaginary part, reactive component.


Conduction triangle



Current triangle