Electrostatics Flashcards
What is Coulomb’s Law?
The force of static charges is proportional to the product of the charges and inversely proportional to the square of the distance between them
What kind of law is Coulomb’s Law?
An inverse square law (like Newton’s Gravitational Law)
What is the equation for Coulomb’s Law?
Fe=kq1q2/r^2
k=9x10^9
Units= N*m^2/C^2
What is charge (q) measured in?
Coulombs (C)
What are the types of static charges?
Attraction (-)
Repulsion (+)
When is electrostatic force neutralized?
When gravity is present
Is electrostatic force conservative?
Yes, W=EqΔr
What is Electric Potential?
A measure of the magnitude of electrical potential energy per unit charge at a particular location in the field
What is Potential Difference?
The work done per unit charge, in moving for equipontential surface A to equipontential surface B
What is potential difference also known as?
Voltage
Units: Volts(V)
What is an equipontential surface?
Set of all positions on a circle of radius (r) that experience the same amount of electric potential
What is the difference between electric potential and electric potential energy?
Electric potential is a measurement of potential energy; electric potential energy is stored energy in an electric charge
