When a capacitor is connected in a series $LR$ circuit,what happens to the alternating current flowing in the circuit?

In a series $LR$ circuit,$X_L = 3R$. Now,a capacitor with $X_C = R$ is added in series. What is the ratio of the new power factor to the old power factor?

In an $LCR$ circuit shown in the following figure,what will be the readings of the voltmeter across the resistor and ammeter if an $a.c.$ source of $220\,V$ and $100\,Hz$ is connected to it as shown?

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

In an $LCR$ series circuit, if the potential differences across the inductor, capacitor, and resistor are $60 \,V$, $30 \,V$, and $40 \,V$ respectively, then the $AC$ voltage applied to the circuit is: (in $\,V$)

In the given series $LCR$ circuit,if the value of $R$ is changed,then: