Alternating Current

Related Questions

• In a circuit containing an inductance of zero resistance, the e.m.f. of the applied ac voltage leads the current by

  ---

• The reactance of a coil when used in the domestic ac power supply (220 volts, 50 cycles per second) is 50 ohms. The inductance of the coil is nearly

  ---

• Current in the circuit is wattless, if

  ---

• If a current I given by ${I_0}\sin \,\left( {\omega \,t - \frac{\pi }{2}} \right)$ flows in an ac circuit across which an ac potential of $E = {E_0}\sin \omega \,t$ has been applied, then the power consumption P in the circuit will be

  ---

• In a series resonant circuit, the ac voltage across resistance $R$, inductance $L$ and capacitance $C$ are $5$ V, $10$ V and $10$ V respectively. The ac voltage applied to the circuit will be

  ---