Question

9. Two identical capacitors are first connected in series
and then in parallel. The ratio of equivalent
capacitance is
J & K CET 2013]
(a) 1:1
(b) 1:2
(c) 1:3
(d) 1:4​

Answer 1

Explanation:

let the capacitance of two capacitors be c

then series combination yields a capacitance of

eq capacitance = (c×c)/(c+c)

= c/2

when they are connected in parallel

eq capacitance = c+c= 2c

series : parallel = c/2:2c

= 1:4