Lecture notes
Flashcards for 21.3 Energy Stored by Capacitors
- Institution
- OCR
Flashcards for 21.3 Energy Stored by Capacitors
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
Seller
Follow
Content preview
Q:A:
This shows an electron moving towards the negative plate of a capacitor that is being
charged
This electron will experience a repulsive electrostatic force from all the electrons
already on the plate
External work has to be done to push this electron onto the negative plate
Similarly, work is done to cause an electron to leave the positive plate of the capacitor
The external work is provided by the battery of power supply connected to the
capacitor
In short, the energy stored in a capacitor comes from the energy of the batter or
power supply
Q: A p.d - charge graph
A:
Q: How can you determine the energy stored in a capacitor
A:
A graph of p.d against charge for a capacitor
Work done = p.d x charge
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller dylanval. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £5.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
55628 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now