I have to calculate the voltage across a 50 uF (micro Farad) capacitor. The circuit voltage supply is 20V the capacitor is in series. There's an 100uF capacitor and 70uF capacitor parallel in the same circuit. I know that V=Charge/Capacitance however I don't know how to work out the charge to find the voltage. The capacitance of the circuit is 38.6uF

Original post by ToonLegend_

I have to calculate the voltage across a 50 uF (micro Farad) capacitor. The circuit voltage supply is 20V the capacitor is in series. There's an 100uF capacitor and 70uF capacitor parallel in the same circuit. I know that V=Charge/Capacitance however I don't know how to work out the charge to find the voltage. The capacitance of the circuit is 38.6uF

Let C

Knowing that C

The p.d. across C

Since the power supply is in series with C

20 = V

Knowing that V = Q/C, rewrite eqn(1)

$\dfrac{Q_{\text{tot}}}{C_{\text{tot}}} = \dfrac{Q_1}{C_1} + \dfrac{Q_{23}}{C_{23}}$

C

Do you know how are Q

Once you know their relationship, you can work out the p.d. across C

- GCSE Exam Discussions 2024
- A level physics without maths
- What online resources can I use to guarantee I get an A in A-Level AQA Physics?
- A-level Physics Study Group 2023-2024
- What are these a levels and their courses like?
- A-level Physics Study Group 2022-2023
- Lancaster University Physics Interview
- A level physics help
- gcse physics
- Taking a gap year to retake a levels, tips for getting A/A*?
- Getting into Physics A-Level
- Official PHYSICS applicants thread 2024
- Isaac physics answers
- How should i be revising for maths?
- Got an E in AQA physics mock, need help
- Will it be possible to learn the entire GCSE maths and physics curriculum in a year?
- Is the physics in an Engineering degree much harder than A Level physics?
- GCSE Physics Study Group 2023-2024
- Is Physics A-Level even THAT hard?
- Getting an A* for IAL Science