A box \( P \) and a coil \( Q \) are connected in series with an ac...

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  • Published on:  Sunday, July 31, 2022
  • A box \( P \) and a coil \( Q \) are connected in series with an ac source of variable frequency. The emf of source is constant at \( 10 \mathrm{~V} \). Box \( P \) contains a capacitance of \( 1 \mu \mathrm{F} \) in series with a resistance of \( 32 \Omega \). Coil \( Q \) has a self inductance \( 4.9 \mathrm{mH} \) and a resistance \( 68 \Omega \) in series. The frequency is adjusted so that the maximum current flows in \( P \) and \( Q \). At this frequency the voltage across \( P \) and \( Q \) respectively are
    (a) \( 9.76 \mathrm{~V}, 8.92 \mathrm{~V} \)
    (b) \( 6.29 \mathrm{~V}, 7.96 \mathrm{~V} \)
    (c) \( 7.70 \mathrm{~V}, 10.92 \mathrm{~V} \)
    (d) \( 7.70 \mathrm{~V}, 9.76 \mathrm{~V} \)
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  • Source: https://youtu.be/Q3gK9vRTf-Q
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