Three students, X, Y and Z performed an experiment for studying the variation of a.c. with…
Physics20255 marksShort answer
Three students, X, Y and Z performed an experiment for studying the variation of a.c. with frequency in a series LCR circuit and obtained the graphs as shown below. They all used an AC source of the same emf and inductance of the same value.
(a)[1.25]
Who used minimum resistance?
(b)[1.25]
In which case will the quality Q factor be maximum?
(c)[1.25]
What did the students conclude about the nature of impedance at resonant frequency ($f_0$)?
(d)[1.25]
An ideal capacitor is connected across $220\text{ V}$, $50\text{ Hz}$, and $220\text{ V}$, $100\text{ Hz}$ supplies. Find the ratio of current flowing through it in the two cases.
