Forces and Energy Flashcards
What is electric charge
a feature of electrons and protons, that causes them to interact with each other.
Also probably other elementary particles, but not relevant
What is electric charge?
a feature of electrons and protons, that causes them to interact with each other.
Direct copy from pptx
Also probably other elementary particles, but not relevant rn.
What is the unit of electric charge?
The coulomb (C)
Equivalent to the charge transported by 1 ampere of current in 1 second
But thats not important (damian ?)
How do charges interact with each other?
Like charges (++) repel
Unlike charges (+-) attract
Unlike is also “Opposite”
Like is also “Same”
Direct copy from pptx
When is an object “charged”
if it has an imbalance of positive and negative charges
This is usually due to addition or removal of electrons
Direct copy from pptx
What is an electric field?
a region where a charged particle will experience a force
Direct copy from pptx
How are electric fields represented?
By electric field lines
The direction of the lines represents the direction of the field it shows the direction a positive charge would move in the field
The distance between lines represents the strength of the field the closer the lines, the stronger the field
Direct copy from pptx
What is the inverse-square law?
States that the farther away an object is from an effect, or a physical quantity causing an effect, the less change can be observed in the object.
Direct copy simple.wikiperia.org article
What is coulomb’s law?
F=k*q1q2/r^2
k is a constant we dont need to know
F is the resulting force
Q (1,2) are the charges of 2 objects
r is the distance
The electric fields pptx slide 9 has a better looking version
Continue from slide 13
