The complex impedance (Z) (real and imaginary, or resistance and reactance) of a capacitor and a resistor in parallel at a particular frequency can be calculated using the following formulas.

Where f is the Frequency in Hz

C is the Capacitance in Farads

R is the Resistance in Ohms

X_{C} is the Capacitive Reactance in Ohms

This calculator is provided free by Chemandy Electronics in order to promote the FLEXI-BOX

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