Exam-style question
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At what frequency does resonance occur in an LC circuit?.
- A.When the inductance is zero
- B.When the capacitance is zero
- C.When the inductive reactance equals the capacitive reactance
- D.When the circuit is short-circuited
Model answer
What a good answer should say
- When the inductive reactance equals the capacitive reactance
Explanation
Why this works
Resonance occurs in an LC circuit when the inductive reactance (XL) is equal to the capacitive reactance (XC). This balance allows the circuit to resonate at a specific frequency, maximizing energy transfer.
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