First slide

Capacitors and capacitance

Question

Figure shows two capacitors C₁ and C₂ connected with 10 V battery and terminal A and B are earthed. The graph shows the variation of potential as one moves from left to right. Then the ratio C₁/C₂ is

Moderate

A

5/2
B

2/3
C

2/5
D

4/3

Solution

Potential drops across C₁ and C₂ are 6 V and 4V, respectively. Since they are in series, same charge flows through them and
$\frac{C_{1}}{C_{2}} = \frac{V_{2}}{V_{1}} = \frac{2}{3}$

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