Questions
Question 1
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In an AC resistor, what is the phase relationship between voltage and current?
Question 2
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State the capacitive reactance and inductive reactance formulas.
Question 3
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Which component has reactance that increases with frequency: a capacitor or an inductor?
Question 4
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Find \(X_L\) for \(L=0.25\,\mathrm H\) at \(f=60\,\mathrm{Hz}\).
Question 5
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Find \(X_C\) for \(C=10\,\mu\mathrm F\) at \(f=50\,\mathrm{Hz}\).
Question 6
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A capacitor has \(X_C=200\,\Omega\) when driven by \(120\,\mathrm V\) rms. Find the rms current.
Question 7
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For a capacitor, does current lead or lag voltage, and by what angle in the ideal case?
Question 8
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For an inductor, does current lead or lag voltage, and by what angle in the ideal case?
Question 9
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A capacitor has \(X_C=150\,\Omega\) at \(100\,\mathrm{Hz}\). What is its reactance at \(200\,\mathrm{Hz}\)?
Question 10
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An inductor and capacitor have equal reactance at angular frequency \(\omega_0\). Derive \(\omega_0\) in terms of \(L\) and \(C\).