Exercise: Capacitors

Questions for: Capacitors

Select the equation below that represents the relationship between charge, capacitance, and voltage for a capacitor.
A:
Q = CV
B:
C = QV
C:
D:
V = IR
Answer: A
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In a 20 Vac series RC circuit, if 20 V is measured across the resistor and 40 V is measured across the capacitor, the applied voltage is:
A:
45 V
B:
50 V
C:
55 V
D:
60 V
Answer: A
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Energy is stored by a capacitor in a magnetic field.
A:
True
B:
False
C:
D:
Answer: B
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A capacitor blocks ac but passes dc.
A:
True
B:
False
C:
D:
Answer: B
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The true power in a capacitor is zero.
A:
True
B:
False
C:
D:
Answer: A
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