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A , ac source is connected to a coil having coefficient of self-inductance of and a resistance of …
(a)
A $220\text{ V}$, $50\text{ Hz}$ ac source is connected to a coil having coefficient of self-inductance of $1\text{ H}$ and a resistance of $400\,\Omega$. Calculate:
(1) the reactance of the coil.
(2) the impedance of the coil.
(3) the current flowing through the coil.
(b)
Draw a labelled graph showing variation of impedance (Z) of a series LCR circuit vs frequency (f) of the ac supply. Mark the resonant frequency as $f_0$.
Draw: labelled graph showing variation of impedance (Z) of a series LCR circuit vs frequency (f) of the ac supply
Must show: impedance Z on y-axis, frequency f on x-axis, minimum impedance Z = R at resonant frequency f0
Answer
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From ISC 2024 Physics Paper 1, question 18(i).