Change the chapter
Question
An RL circuit consists of a $40.0\textrm{ }\Omega$ resistor and a 3.00 mH inductor. (a) Find its impedance Z 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 a capacitor.
1. At 60.0 Hz, the impedance is $40.0\textrm{ }\Omega$. At 10.0 kHz, the impedance is $193\textrm{ }\Omega$
2. At 60.0 Hz the impedance in example 23.12 is greater by a factor of 13 on account of having a capacitor of $5.00\textrm{ }\mu\textrm{F}$. At 10.0 kHz the impedance in example 23.12 is $190 \textrm{ }\Omega$, which is different by only 2%. This means that adding a capacitor has a significant effect only at low frequencies.
Solution Video