Extra exam question E7D14
Subelement E7, PRACTICAL CIRCUITS· Group E7D
What is the purpose of connecting equal-value resistors across power supply filter capacitors connected in series?
- A.Equalize the voltage across each capacitor
- B.Discharge the capacitors when voltage is removed
- C.Provide a minimum load on the supply
- D.All these choices are correct (correct answer)
WhyEqual-value resistors connected across series power supply filter capacitors equalize the voltage across each capacitor, discharge the capacitors when voltage is removed, and provide a minimum load on the supply. Equal-value resistors connected across power supply filter capacitors wired in series serve several purposes at once: they equalize the voltage across each capacitor (compensating for capacitor tolerance differences that would otherwise let one capacitor see a disproportionate share of the total voltage), they discharge the capacitors safely once power is removed, and they provide a minimum bleeder load on the supply, answer D. Since all three of these benefits genuinely apply, no single one alone is the complete answer.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
Related questions
- E7D01How does a linear electronic voltage regulator work?
- E7D02How does a switchmode voltage regulator work?
- E7D03What device is used as a stable voltage reference?
- E7D04Which of the following describes a three-terminal voltage regulator?
- E7D05Which of the following types of linear voltage regulator operates by loading the unregulated voltage source?