Question

What is the value of inductance L for which the current is maximum in a series LCR circuit with C = 10 μF and ω = 1000 s^-1 ?

(a) 1 mH 

(b) 10 mH 

(c) 100 mH 

(d) Cannot be calculated unless R is known

Answer 1

(c) 100 mH

L = \(\frac{1}{ω^2C}\) = \(\frac{1}{(1000)^2 \times 10 \times 10^{-6}}\)= 0.1 H =100mH