Question

Problem 40a

Answer 1

Given information

There are three capacitors. From those three   connected in series and this series circuit is parallel to the capacitor  . A voltage source of 21V is present in the circuit. It is required to find the voltage across each capacitor.

Step-by-step explanation

Step 1.

The relationship between the voltage(V) across a capacitor of capacitance C and charge q is

 

In this problem, are in series. If the equivalent capacitance of this two capacitor is   then,

 

Here given,  =3.00µF and  =4.00µF

Therefore, 

 

Now, and (2.00µF) are in parallel. Therefore, the equivalent capacitance,

 

Therefore, total charge of the circuit is,