Editing Angular frequency (section)

=== LC circuits ===
The resonant angular frequency in a series [[LC circuit]] equals the square root of the [[multiplicative inverse|reciprocal]] of the product of the [[capacitance]] (''C'', with SI unit [[farad]]) and the [[inductance]] of the circuit (''L'', with SI unit [[Henry (unit)|henry]]):<ref name=LC1>
{{cite book
  | last = Nahvi
  | first = Mahmood
  | author2 = Edminister, Joseph
  | title = Schaum's outline of theory and problems of electric circuits
  | publisher = McGraw-Hill Companies (McGraw-Hill Professional)
  | year = 2003
  | pages = 214, 216
  | url = https://books.google.com/books?id=nrxT9Qjguk8C&q=angular+frequency&pg=PA103
  | isbn = 0-07-139307-2
}} (LC1)</ref>
<math display="block">\omega = \sqrt{\frac{1}{LC}}.</math>

Adding series resistance (for example, due to the resistance of the wire in a coil) does not change the resonant frequency of the series LC circuit. For a parallel tuned circuit, the above equation is often a useful approximation, but the resonant frequency does depend on the losses of parallel elements.