Radio Amateur Quiz Canadian License

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Question B-005-012-010

Resonance is the condition that exists when:

Correct Answer

inductive reactance and capacitive reactance are equal and opposite in sign

Explanation

Mathematically, XL = jωL and XC = 1/(jωC) = -j/(ωC). At resonance, XL + XC = 0, meaning XL = -XC, or |XL| = |XC|.

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