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A resistor, a inductor and a capacitor are connected in series to a ac source. Calculate the: (1)…
(i)[3.0]
A $400\ \Omega$ resistor, a $3\text{ H}$ inductor and a $5\ \mu\text{F}$ capacitor are connected in series to a $220\text{ V}, 50\text{ Hz}$ ac source. Calculate the:
(1) Impedance of the circuit.
(2) Current flowing through the circuit.
(ii)[2.0]
Draw a labelled graph showing the variation of impedance ($Z$) of a series LCR circuit versus frequency ($f$) of the ac supply.
Draw: Graph of impedance (Z) versus frequency (f) for a series LCR circuit
Must show: Impedance Z on y-axis, Frequency f on x-axis, Resonant frequency f_0 where Z is minimum and equal to R
Answer
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From ISC 2020 Physics Paper 1, question 20(a).