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RLC Circuits and Resonance - Technical MCQs

Q1:

<div class="Aptitude-td-qtxt table-responsive w-100">What is the total current?<br><br><img src="/_files/images/basic-electronics/complete/mcq9_1008_1.gif"></div>

A 56.6 mA

B 141 mA

C 191 mA

D 244 mA

ANS:B - 141 mA

Let I = I1 + I2 + I3.
NOW Xl=2πfL = 2 x 3.14 x 750x4 ~ 18850ohm.
also Xc=1÷{2πfC}= 2 x 3.14 x 0.04 x 10^-6~ 5305ohm.
I= √{(497/4000)^2 + ((497/18850)-(497/5305)^2.
I= ~0.141A = 141mA.