A capacitor and an inductance coil are connec | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The current in an $AC$ circuit containing a capacitor is given by $i = \frac{V}{\sqrt{R^2 + X_C^2}}$,where $X_C = \frac{1}{\omega C}$ is the capac

Vedclass · Accepted Answer

a dielectric is introduced into the gap between the plates of the capacitor

Vedclass · Answer

(D) The current in an $AC$ circuit containing a capacitor is given by $i = \frac{V}{\sqrt{R^2 + X_C^2}}$,where $X_C = \frac{1}{\omega C}$ is the capacitive reactance.When a dielectric is introduced into the gap between the plates of the capacitor,the capacitance $C$ increases $(C = K C_0)$.As $C$ increases,the capacitive reactance $X_C = \frac{1}{\omega C}$ decreases.Since the impedance $Z = \sqrt{R^2 + X_C^2}$ decreases,the current $i$ in the circuit increases.Consequently,the brightness of the bulb,which depends on the power dissipated $(P = i^2 R)$,increases.

$A$ capacitor and an inductance coil are connected in separate $AC$ circuits with a bulb glowing in both the circuits. The bulb glows more brightly when

Similar Questions

In the given circuit,the magnitudes of $V_{L}$ and $V_{C}$ are twice that of $V_{R}$. Given that $f=50\,Hz$ and $R=5\,\Omega$,the inductance of the coil is $\frac{1}{K\pi}\,mH$. The value of $K$ is:

$A$ capacitance of $\left(\frac{10^{-3}}{2 \pi}\right) F$,an inductance of $\left(\frac{100}{\pi}\right) mH$,and a resistance of $10 \Omega$ are connected in series with an $AC$ voltage source of $220 V, 50 Hz$. The phase angle of the circuit is (in $^{\circ}$)

In the circuit diagram shown,$X_C = 100 \, \Omega$,$X_L = 200 \, \Omega$,and $R = 100 \, \Omega$. The source voltage is $V = 200 \sin(\omega t) \, \text{V}$. The effective $(RMS)$ current through the source is:

In an $AC$ circuit,an inductor,a capacitor,and a resistor are connected in series with $X_{L} = R = X_{C}$. The impedance of this circuit is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module