List of top Physics Questions on AC Circuits asked in VITEEE

The current graph for resonance in an \( LC \) circuit is

The value of inductance \( L \) for which the current is maximum in series \( LCR \) circuit with \( C = 10 \, \mu F \) and \( R = 1000 \, \Omega \) is

The capacitance of a parallel plate capacitor with air as dielectric is \( C \). If a slab of dielectric constant \( K \) and of the same thickness as the separation between the plates is introduced so as to fill \( \frac{1}{4} \)th of the capacitor (shown in figure), then the new capacitance is

In an AC circuit, the potential across an inductance and resistance joined in series are respectively 16V and 20V. The total potential difference across the circuit is

Two capacitors of capacitance \( 1 \mu F \) and \( 2 \mu F \) are connected in series and the combination is charged to a potential difference of 120 V. If the charge on the combination is 80 μC, the energy stored in the capacitor of capacitance \( C_1 \) is

A resistor \( R \), an inductor \( L \), and a capacitor \( C \) are connected in series to an oscillator of frequency \( n \). If the resonant frequency is \( n_r \), then the current lags behind voltage when

A parallel plate capacitor has capacitance \( C \). If it is equally filled the parallel layers of materials of dielectric constant \( K_1 \) and \( K_2 \), its capacity becomes \( C_T \). The ratio of \( C_T \) and \( C \) is

The output voltage of a transformer connected to a 220 V line is 1100 V at 2 A current. Its efficiency is 100%. The current coming from the line is: