An inductance...

Question

An inductance L, capacitance C and resistance R are connected in series across an AC source of angular frequency $ω$ . If $ω^{2} > \frac{1}{L C}$ then :

emf leads the current

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both the emf and the current are in phase

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current leads the emf

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emf lags behind the current

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Solution

The correct option is A emf leads the current
If $ω^{2} > \frac{1}{L C}$
then circuit is inductive.
Therefore voltage leads the current.

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An inductance L, capacitance C and resistance R are connected in series across an AC source of angular frequency ω. If ω2>1LC then :

The correct option is A emf leads the currentIf ω2>1LCthen circuit is inductive.Therefore voltage leads the current.

An inductance L, capacitance C and resistance R are connected in series across an AC source of angular frequency $ω$ . If $ω^{2} > \frac{1}{L C}$ then :

The correct option is A emf leads the current
If $ω^{2} > \frac{1}{L C}$
then circuit is inductive.
Therefore voltage leads the current.