Alternating Current

Related Questions

• If an alternating voltage is represented as $E = 141\sin (628\,t),$ then the rms value of the voltage and the frequency are respectively

  ---

• An inductor $L$ and a capacitor $C$ are connected in the circuit as shown in the figure. The frequency of the power supply is equal to the resonant frequency of the circuit. Which ammeter will read zero ampere

  ---

• An inductor of inductance $L$ and resistor of resistance $R$ are joined in series and connected by a source of frequency $\omega $. Power dissipated in the circuit is

  ---

• In an ac circuit the reactance of a coil is $\sqrt 3 $ times its resistance, the phase difference between the voltage across the coil to the current through the coil will be

  ---

• In a circuit $L,\,C{\rm{ and }}R$are connected in series with an alternating voltage source of frequency $f$. The current leads the voltage by $45^o$. The value of $C$ is

  ---