This note is an AQA A level Physics note on Electricity. There are useful tables, graphs and some drawings and illustrations attached in the note for better understanding.
1 Basics of Electricity
Potential Energy
For an electric circuit to work ,
it needs to have a
Electric Current source of potential Energy (PE)
# can be provided with a
charge carriers ↑
·y
batteries/cells W
wire
·
Electric current :
rate of flow of charge
around the
-current
circuit
always flows n-
from + positive - -
negative &
terminals of the source ELECTRIC CURRENT &
. ↳ ⑰]
I X
I
of PE
-created by movement
of charge carriers
↓ Battery/cell
charged particles)
Flow of Current is OPPOSITE to Flow of Electrons
2 types of
charge carers
/ W
Elections
Ions
- -
In metals
-
-free to move around
-e free to move around
in a solution of dissolved salt
their structure bic of the
way metal
metallic substances
atoms wi
are bonded
Ex) NaCI
Nat]
I
lows that
the
carry
charge
when wire is not wire is carrying
carrying current current
27 *
I
5-7 -7
5⑧ 088
⑧-
->
⑧ ⑧ 00 ⑧ ⑧ -
-
I
I ↑ I Y !
⑧ ⑧ & ⑳- ⑧
-
=0
& OEDEDED1
E I - I I E
Y
⑧->⑧ 80
*O↑0 I -
0+ 8-8+070- 0
I
I
Free Electrons metal Atom Free Electrons
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 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 these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ykim02105. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $4.56. You're not tied to anything after your purchase.