JEE PYQ: Capacitance Question 8
Question 8 - 2021 (24 Feb Shift 1)
Two equal capacitors are first connected in series and then in parallel. The ratio of the equivalent capacities capacitances in the two cases will be -
(1) 2 : 1
(2) 1 : 4
(3) 4 : 1
(4) 1 : 2
Show Answer
Answer: (2)
Solution
In series: $C_{12} = \frac{C}{2}$. In parallel: $C_{34} = 2C$. $\frac{C_{12}}{C_{34}} = \frac{C/2}{2C} = \frac{1}{4}$.