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Four 10F capacitors are connected in series, calculate the equivalent capacitance.(a) 1.5F(b) 2.5F(c) 3.5F(d) 0.5FThe question was posed to me in unit test.This intriguing question originated from Capacitors in Series topic in chapter Capacitance and Capacitors of Basic Electrical Engineering

Answer»

The correct ANSWER is (B) 2.5F

Easiest EXPLANATION: When capacitors are CONNECTED in series,

1/Ctotal=1/C1+1/C2+1/C3+1/C4=1/10+1/10+1/10+1/10=4/10F.

Ctotal=10/4=2.5F.



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