At resonance, if the capacitance is doubled then what should be the inductance to maintain the same resonance frequency?
Correct answer: D. Halved
- A. Doubled
- B. Quadrupled
- C. Tripled
- D. Halved
Explanation
The resonant frequency depends on the product LC. To keep the frequency constant, the product LC must also remain constant. Therefore, if the capacitance (C) is doubled, the inductance (L) must be halved to maintain the same product.
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Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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