Question

What is the equivalent capacitance?

(a) 1.5F

(b) 0.667F

(c) 2.45F

(d) 2.75F

The question was asked by my school teacher while I was bunking the class.

The question is from Capacitors in Series in section Capacitance and Capacitors of Basic Electrical Engineering

Answer 1

Correct choice is (b) 0.667F

The best explanation: When capacitors are connected in series,

1/Ctotal = 1/C1+1/C2 = 1/2+1 = 3/2

Ctotal = 2/3 = 0.667F.