A capacitor is also called a:
Correct answer: B. High pass filter
- A. Low pass filter
- B. High pass filter
- C. Both A and B
- D. None
Explanation
A capacitor's reactance (Xc = 1/(2πfC)) decreases as frequency increases. This means it blocks low-frequency signals but allows high-frequency signals to pass through easily, enabling it to function as a high-pass filter.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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