Wire-wound resistors are unsuitable for use at high frequencies because they_______?
Correct answer: D. exhibit unwanted inductive and capacitive effects
- A. create more electrical noise
- B. are likely to melt under excessive eddy current heat
- C. consume more power
- D. exhibit unwanted inductive and capacitive effects
Explanation
The turns of a wire-wound resistor form a coil, giving it unwanted inductance and inter-turn capacitance. These parasitic effects make its impedance depart from a pure resistance at high frequency.
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