Alternating current Lab question??? 1. What happens to the reactance of capacito

Question

Alternating current Lab question???

1. What happens to the reactance of capacitor, reactance of inductor and the resistance of resistor when frequency increases to the infinity?
2. What happens to the reactance of capacitor, reactance of inductor and the resistance of resistor when frequency approaches zero?
3. Does the resonance frequency of an AC circuit depend on the voltage delivered by generator? Explain your answer.

4. Does the resonance frequency depend on the magnitude of resistance R? Explain your answer.

5. What is special about the voltages on capacitor and inductor at the resonance frequency?

Explanation / Answer

1) when the frequency increases to infinity

reactance of capacitor = 1/(2*pi*f*c) = 0

reactance of inductor = (2*pi*f*L) = infinite

resistance = R

2)

at the frequency equal to zero

reactance of capacitor = 1/(2*pi*f*c) = infinite

reactance of inductor = (2*pi*f*L) = 0

resistance = R

3)
resonance frequency = 1/(2*pi*sqrt(L*C))

now, the resonance frequency is not dependent on the voltage delivered by the source voltage.

4)

NO, the resonance frequency is independent of R

5)

at resonance frequency ,

Voltage across C = - voltage across L

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