In a series resonant $LCR$ circuit,the voltage across $R$ is $100 \ V$ and $R = 1 \ k\Omega$ with $C = 2 \ \mu F$. The resonant frequency $\omega$ is $200 \ rad/s$. At resonance,the voltage across $L$ is:

  • A
    $4 \ mV$
  • B
    $2.5 \times 10^{-2} \ V$
  • C
    $40 \ V$
  • D
    $250 \ V$

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$A$ transmitting station releases waves of wavelength $960\, m$. $A$ capacitor of $2.56\, \mu F$ is used in the resonant circuit. The self-inductance of the coil necessary for resonance is $............ \times 10^{-8}\, H$.

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In an $LCR$ series $AC$ circuit at resonance,the value of the power factor will be . . . . . . .

The readings of the ammeter and voltmeter in the following circuit are respectively:

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