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The figure below shows part of a circuit containing 3 capacitors.

Write an expression for CT the effective capacitance between A and B.

Answer Text:
CP = C1 + C2
#1/(CT) = 1/(CP) +1/(C3)#
#CT = (CPC3)/(C3+CP) =(C1+C2)/(C3+C1 +C3)#