Deep Dive: G6A04
The correct answer is C: High capacitance for a given volume. A characteristic of an electrolytic capacitor is high capacitance for a given volume. Electrolytic capacitors can store much more charge per unit volume than other types. For amateur radio operators, this makes them useful for power supply filtering. Understanding this helps when selecting capacitors.
Why Other Answers Are Wrong
Option A: Incorrect. Electrolytic capacitors don't have tight tolerance - they typically have ±20% tolerance, which is loose. Tight tolerance isn't a characteristic. Option B: Incorrect. Electrolytic capacitors have more leakage than other types - they're known for leakage current. Less leakage isn't a characteristic. Option D: Incorrect. Electrolytic capacitors aren't inexpensive RF capacitors - they're used for power supply filtering, not RF. RF capacitors are different types.
Exam Tip
Electrolytic capacitor characteristic = high capacitance for given volume. Think 'E'lectrolytic = 'E'xtra 'C'apacitance per 'V'olume. Can store much more charge per unit volume than other types. Not tight tolerance, not less leakage, not RF capacitor - just high capacitance per volume.
Memory Aid
Electrolytic capacitor characteristic = high capacitance for given volume. Think 'E'lectrolytic = 'E'xtra 'C'apacitance. Can store much more charge per unit volume than other types. Ideal for power supply filtering.
Real-World Example
You need a large capacitor for power supply filtering. An electrolytic capacitor can provide 10,000 µF in a small package, while a ceramic capacitor of the same size might only provide 1 µF. Electrolytic capacitors offer high capacitance for a given volume, making them ideal for power supply applications.
Source & Coverage
Question Pool: 2023-2027 Question Pool
Subelement: G6A
Reference: 2023-2027 Question Pool · G6 - Circuit Components
Key Concepts
Verified Content
Question from the official FCC General Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the G6A topic.