What occurs to the charging current in a capacitor test when a capacitor is good?

Prepare for the Avionics Electronics Technician Test with comprehensive flashcards and multiple-choice questions. Each query is designed to enhance your understanding and is accompanied by detailed explanations. Ace your exam today!

When testing a capacitor, if the capacitor is functioning properly, it will exhibit a consistent high resistance reading. This high resistance indicates that the capacitor can hold charge effectively and does not have any internal shorting or significant leakage. A good capacitor charges and discharges slowly, leading to a gradual decline of current when initially charged, but eventually, it stabilizes at a high resistance level after sufficient time.

This characteristic is vital because an ideal capacitor will act as an open circuit after it is charged, preventing a continuous flow of direct current, while still allowing alternating current to pass depending on frequency. Therefore, the presence of a high resistance reading is a key indicator that the component is in good condition and aligns with expected behavior in normal capacitive operation.

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