**Question:**

A series LR circuit is connected to an ac source of frequency $\omega$ and the inductive reactance is equal to $2 R$. A capacitance of capacitive reactance equal to $R$ is added in series with $\mathrm{L}$ and $\mathrm{R}$. The ratio of the new power factor to the old one is :

Correct Option: 4

**Solution:**

### Related Questions

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