In an alternating current circuit, the current through a capacitor at a high frequency will be
Correct answer: B. large.
- A. zero.
- B. large.
- C. small.
- D. undetermined.
Explanation
at high frequencies, Xc becomes very small, allowing a large current to flow through the capacitor.
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About AC Through Resistor, Capacitor and Inductor
Alternating current through a resistor, capacitor and inductor involves phase relationships between voltage and current, reactance, impedance and energy transfer. A resistor keeps voltage and current in phase, while a capacitor and inductor produce opposite phase shifts, a distinction used in circuit diagrams and numerical calculations.
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