An RLC series circuit has

PHYSICS · Single correct · CBSE · Physics · Alternating Current · Alternating Current

Problem

R = 30\,\Omega

L = 0.10\,\text{H}

and

C = 40\,\mu\text{F}

. Compare its impedance

Z

at the three frequencies listed below: (i)

f_1 = 20\,\text{Hz}

, (ii)

f_2 = 40\,\text{Hz}

, (iii)

f_3 = 80\,\text{Hz}

. Which of the following orders is correct? (a)

Z_{f_2} < Z_{f_3} < Z_{f_1}

(b)

Z_{f_3} < Z_{f_2} < Z_{f_1}

(c)

Z_{f_1} < Z_{f_2} < Z_{f_3}

(d)

Z_{f_1} = Z_{f_2} = Z_{f_3}