Please answer question 28 It was a 6 marks question in my pre board Q28 - Physics - Alternating Current

Question

Please answer question 28 It was a 6 marks question in my pre
board

Q28 (a) What is the value of the maximum power factor in an L-C-R
circuit ? For the maximum power factor, what is the (i) impedance
of the circuit in terms of R, X L and XC (ii)
phase difference between voltage and current and (iii) expression
for the angular frequency of source voltage ?

(b) In case of an L- C- R circuit, draw a graph between peak value
of current and angular frequency of source How do the resonant
frequency and peak current at resistance change with resistance ?

Sanjay Upadhyay · Accepted Answer