Interview
Simplified Grade 11/12 IEB Electrostatics notes
- Course
- Physical Sciences
- Institution
- 12th Grade
Perfect simplified grade 11/12 IEB or DBE Electrostatics notes that are easy to learn.
[Show more]
Seller
Follow
Content preview
Electric Charge ONLY insulators can hold static charge.Friday, 10 March 2023 07:43
Electric charge Two identical touching conducting sphere s
When two identical conducting spheres on insulating stands are allowed to touch they share the
Insulating materials- Polythene & Perspex (not metals) charged evenly between them.
-easily charged with static electricity by rubbing a dry cloth
-charged by friction
Rub cloth on rod -> negatively charged rod -> positively charged cloth Steps
--->friction between rod and cloth detaches electrons from the atoms of q1=-5nC q2=-3nC 1. Check unit of both spheres (must be same unit)
cloth and they transfer to rod Q= -4nC (q new) 2. Use the formula of Q
3. Find Difference between qold and qnew to find
Rub cloth on rod -> positively charged rod -> negatively charged cloth how much charged moved (qmoved )
---> friction between rod and cloth detaches electrons from the atoms of Lost 1 Gained 1 4. To find how many electrons moved
rod and they transfer to the cloth electron electron -> qmoved = number of electrons X 1.6 x10-19 C
Electrons- negatively charged particles
Charge on an electron is: e= -1.6 x10-19 C
Unit of charge: Coulomb ( C ) q=-4nC q=-4nC When they now move apart
Q= Number of electrons (or protons) X 1.6 x10-19 C
Smaller units of electric charge
1. miliCoulomb 1mC = 1 x 10-3 C
2. microCoulomb 1uC = 1 x 10-6 C
3. nanoCoulomb 1nC = 1 x 10-9 C
4. picoCoulomb 1pC = 1 x 10-12 C
Electrostatics Page 1
, Electrostatic forces
Tuesday, 14 March 2023 12:20
➢ Occur between objects which are charged.
➢ Objects that carry the same type of charge always repel each other
Electrostatic Force F
➢ Objects that carry different charges always attract.
+ + Electrostatic Force F
Electrostatic Force F Electrostatic Force F
- -
Electrostatic Force F Electrostatic Force F
+ -
Electrostatics Page 2
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 EFT, credit card or Stuvia-credit 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 this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller calaca6. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R80,00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76669 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now
