Capacitors

Q1:
The total circuit reactance is ______ in the given circuit.

A

50

B

140

C

265

D

676

ANS:A -

50

C2//C3 = 1Î¼F + 5Î¼F = 6Î¼F.
C2//C3 series with C1 so: ((C2//C3)*C1)/((C2//C3)+C1).
(6Î¼F*2Î¼F)/(6Î¼F+2Î¼F) = 1.5Î¼F.
Xceq = 1/(2π*f*C) = 1/(2π*400*1.5Î¼F) = 265.2582385 ohms not 50 ohms.

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