A resistor is connected in parallel with a capacitor

PHYSICS · Multi-part · Fermi University Physics · Electronics, Instrumentation & Communication · Circuit foundations and passive networks · Circuit foundations and passive networks

Electronics for Measurement, Ch Phasors, impedance and the frequency response

Problem

A resistor

R = 8.0\,\Omega

is connected in parallel with a capacitor

C = 100\,\mu\mathrm F

. An ideal sinusoidal source of

20\,\mathrm V

rms at

1.0\,\mathrm{kHz}

drives this parallel combination directly. ((a)) Write the capacitor's impedance

Z_C

1.0\,\mathrm{kHz}

in polar form. ((b)) Combine

R

and

Z_C

in parallel and give the result

Z

in polar form, using the polar rules for multiplying and dividing complex numbers. ((c)) Find the average power delivered by the source to this network.

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