The resonant frequency is given by:

$\overline{){\mathbf{f}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbf{2}\mathbf{\pi}\sqrt{\mathbf{L}\mathbf{C}}}}$

A series RLC circuit has a 200 kHz resonance frequency, what is the frequency if

a) The resistor value is doubled?

b) The capacitor value is doubled and, at the same time, the inductor value is halved?

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