Coulomb's Law Flashcards
1
Q
What is the total charge for an isolated system?
A
0
2
Q
What is Coulomb’s Law?
A
F_12=q1q2/4πϵ0 (r2-r1)/abs((r2-r1)^3)
3
Q
What direction is a vector r_ab?
A
From a to b
4
Q
What is the unit vector?
A
r_12(hat)=r_12/abs(r_12)
5
Q
What is the simplified notation of Coulomb’s Law?
A
F_12=q1q2/4πϵ0 r(hat)/r^2
6
Q
What is F_12?
A
The force of q1 acting on q2
7
Q
What is r_12?
A
The distance between q2 and q1
8
Q
What is ϵ0?
A
8.8542 x10^-12 Fm^-1
9
Q
When is the force attractive?
A
When q1q2<0
If q1q2>0 then repulsive
10
Q
What is the principle of superposition?
A
The total force on a charge q0 is the sum of all the forces exerted on q0 by every other charge
