At resonance frequency,the impedance in a series $LCR$ circuit is

At which point is the circuit inductive?

$L$,$C$,and $R$ represent the physical quantities inductance,capacitance,and resistance,respectively. The combination representing the dimension of frequency is:

An inductor of inductance $2 \text{ } \mu\text{H}$ is connected in series with a resistance, a variable capacitor and an a.c. source of $10 \text{ kHz}$. The value of capacitance for which maximum current is drawn in the circuit is $\frac{1}{x} \text{ F}$, where the value of $x$ is (Take $\pi^2 = 10$).

In an $L-C-R$ circuit,if the resistance increases,the quality factor:

In an $L-C-R$ circuit,the capacitance is changed from $C$ to $2C$. For the resonant frequency to remain unchanged,the inductance should be changed from $L$ to: