Which of the following conditions occur at resonance in a series RLC circuit? i. Impedance equals resistance ii. Current is maximum iii. Reactance is maximum iv. Current and voltage are 90° out of phase

i and ii only

i and iii only

i, ii and iii only

i, ii, iii and iv

Correct answer is A

conditions for the occurrence of resonance in a series RLC circuit are i) impedance is at minimum ie when inductive and capacitive reactances are equal ii) when current is maximum

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Which of the following conditions occur at resonance in a series RLC circuit? i. Impedance equals resistance ii. Current is maximum iii. Reactance is maximum iv. Current and voltage are 90° out of phase

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