Capacitor is also called
Correct answer: B. High pass filter
- A. Low pass filter
- B. High pass filter
- C. Both a and b
- D. None
Explanation
A capacitor is commonly used in electronic circuits as a high pass filter. In this configuration, it effectively allows high-frequency signals to pass through while blocking low-frequency signals. This is because capacitors have a reactance that decreases with increasing frequency, meaning they offer less impedance to higher frequencies. In contrast, a low pass filter, typically involving resistors and inductors, permits low-frequency signals to pass while attenuating high frequencies. Therefore, option B is correct, while options A, C, and D are incorrect for the reasons outlined.
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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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