Question

N capacitors having capacitance C are connected in series, calculate the equivalent capacitance.

(a) C/N

(b) C

(c) CN

(d) N/C

I had been asked this question in an interview for job.

This intriguing question originated from Capacitors in Series in section Capacitance and Capacitors of Basic Electrical Engineering

Answer 1

The correct answer is (d) N/C

Best explanation: When capacitors are connected in series, the equivalent capacitance is:

1/Ctotal = 1/C+1/C+1/C+……..N times.

1/Ctotal=N/C.

Ctotal=C/N.