Question

Explain electrical resonance in an L-C parallel circuit.
Deduce the expression for the resonant frequency of the
circuit.
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Answer 1

Answer:

Explanation:Condition for resonance:

When, ωL = 1/ωC then. Z = R = pure resistive = minimum. Hence, max current flows through the circuit. The emf and current are also in same phase. Thus, the circuit is called resonance circuit.

Answer 2

Electrical resonance in an L-C parallel circuit

Explanation:

1. An LC circuit is inn a condition of  resonance electrical resonance in AC circuit  with inductor and capacitor  .
2. When the frequency of AC is gradually changed at certain frequency the impedance become maximum or minimum .
3. This condition is called resonance and such a circuit  called a resonant circuit .
4. Parallel resonance or near to resonance circuits can be used to prevent the  waste of electrical  energy which would otherwise occur while the inductor  built its field or  the the capacitor charged and discharged .