The natural angular frequency of a certain RLC series circuit is w0. A source of sinusoidal emf, with angular frequency w, is inserted into the circuit, and w is varied while the amplitude of the source is held constant. For which of the following values of w is the amplitude of the current oscillations the greatest?
O w0/5
O 2w0
O w0/2
O None of the choices are correct.
O w0