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March 28, 2017

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A variable capacitor is connected to an ac source. what effect does decreasing the capacitance have on the reactance and current in this circuit?
Reactance Current
A) increases decreases
b) decreases no change
c) decreases increases
d) increases increases
e) no change no change

  • physics - ,

    Xc= 1/2pi*f*C

    current= constant/Xc= constant*f*C

  • physics - ,

    Current remains constant. Answer is E.

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