The use of a capacitor filter in a rectifier circuit gives satisfactory performance only when the load:
Correct answer: B. The current is low
- A. The current is high
- B. The current is low
- C. Voltage is high
- D. The voltage is low
Explanation
A capacitor filter works well only when load current is low. Low current means the capacitor discharges slowly. This results in less ripple and smoother DC output.
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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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