Resonance: in a Series LRC Circuit, the Frequency at Which

Multiple Choice

Resonance: In a series LRC circuit, the frequency at which the circuit is at resonance is f₀. If you double the resistance, the inductance, the capacitance, and the voltage amplitude of the ac source, what is the new resonance frequency?

A) 4 f₀
B) 2 f₀
C) f₀
D) f₀/2
E) f₀/4