List of top Physics Questions on AC Circuits asked in AP EAPCET

An alternating supply of \(225\,\text{V}\) is applied across a circuit with resistance \(20\,\Omega\) and impedance \(45\,\Omega\). The power dissipated in the circuit is
To have dissipative power in an LCR series circuit to be half
A resistor of resistance 30 $\Omega$ and a capacitor of reactance 40 $\Omega$ are connected in series to an ac supply. If the rms current through the resistor is 2 mA, then the wattless current is:
In an ac circuit containing Resistance R and capacitance C, the current is I. Keeping the ac voltage constant, if the frequency is made \( \frac{1}{3} \), the current is \( \frac{I}{2} \). Then the ratio of initial reactance to the resistance is:
An ac source has a peak voltage \( \frac{200}{\sqrt{2}} \) V and frequency 50 Hz. The value of voltage after \( \frac{1}{600} \) s from the start is:
A series LCR circuit with $R=40~\Omega$, $L=3H$ and $C=20~\mu F$ is connected to a 400 V AC supply with variable frequency. When the frequency of supply equals the natural frequency of the circuit, the average power transferred to the circuit in one complete cycle is:
In the given circuit, the readings of voltmeters $V_{1}$ and $V_{2}$ are 300 V each. The reading of voltmeter $V_{3}$ and ammeter A are respectively
In an AC circuit containing only an inductor, the current


Capacitive reactance of a capacitor in an AC circuit is 6 k\(\Omega\). If the same capacitor is connected to an AC source of double the frequency, find the new capacitive reactance.
A circuit containing inductance of \(\frac{1}{6\pi}\ \text{H}\) and a resistance of \(15\ \Omega\) in series. If an AC voltage of \(100\ \text{V}\) and \(60\ \text{Hz}\) is applied to the above circuit, then the current in the circuit and phase difference between voltage and current respectively are
A \(100\,\mu\text{F}\) capacitor is connected to a \(100\,\text{V}\), \(50\,\text{Hz}\) AC supply. The rms value of the current is:
\(\dfrac{50}{\pi}\ \mu\text{F}\) capacitor is connected to a \(250\ \text{V},\ 50\ \text{Hz}\) AC supply. Then the rms current of the circuit is:
A \(70\,\text{mH}\) inductor is connected to \(220\,\text{V},\ 50\,\text{Hz}\) AC supply. The rms value of the current in the circuit is:
Capacitive reactance of a capacitor in an AC circuit is \(3\;k\Omega\). If this capacitor is connected to a new AC source of double frequency, the capacitive reactance will become