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RLC Circuits and Resonance - Technical MCQs

Q1:

How much current will flow in a 100 Hz series RLC circuit if VS = 20 V, RT = 66 ohms, and XT = 47 ohms?

A 1.05 A

B 303 mA

C 247 mA

D 107 mA

ANS:C - 247 mA

Rt= 66 * 66= 4356
Xt= 47 * 47= 2209
Z= √1/2 (4356+2209)
√1/2 ( 6565).

Near about = 82,
I = v/ z,
I =20/82 =247map.