Networks Analysis and Synthesis - Engineering

Q1:

An RLC series circuit has R = 7.07 Ω, L = .707 H and C = 7.07 μF. At Half power frequencies the circuit impedance is likely to be

A 7.07 Ω

B 10 Ω

C 14.14 Ω

D 20 Ω

ANS:B - 10 Ω

At half power frequency the circuit impedance is 2 times resistance.