How do series and parallel resonance in an L-C circuit differ in terms of the source resistance required for a pronounced effect?

Show Answers

In series resonance, a low-resistance source is necessary to achieve a significant increase in current.Series resonance requires a source with high resistance to produce a notable surge in current.Parallel resonance demands a low-resistance source to generate a marked rise in impedance.Parallel resonance calls for a low-resistance source to cause a distinct increase in line current.None of the above.

Explanation

For series resonance in an L-C circuit, a low-resistance source is essential to obtain a sharp increase in current flow. This is because the circuit's impedance at resonance is minimal, allowing maximum current when source resistance is low. Conversely, parallel resonance involves a high-impedance condition and does not require a low-resistance source for the sharp change.