Problem 93PE

An RC circuit consists of a 40.0 Ω resistor and a 5.00 μF capacitor. (a) Find its impedance at 60.0 Hz and 10.0 kHz. (b) Compare these values of Z with those found in Example 23.12, in which there was also an inductor.

Example 23.12: Calculating Impedance and Current

An RLC series circuit has a 40.0 Ω resistor, a 3.00 mH inductor, and a 5.00 μF capacitor. (a) Find the circuit’s impedance at 60.0 Hz and 10.0 kHz, noting that these frequencies and the values for L and C are the same as in Example 23.10 and Example 23.11. (b) If the voltage source has Vrms = 120 V , what is Irms at each frequency?

Solution 93PE

At frequency equal to 10kHz and the value of impedance is 532.02Ω which is very less without the inductor because the inductor dominates at high frequencies.