M6.2 Electric fields Flashcards
1
Q
similarities between Gravitational fields and electric fileds
A
inversely proportional r^2
2
Q
differenves between gravitational and electric fields
A
Grav-mass
elec - charge
grav - allways attractive
Elec - can be either
3
Q
in radial electric fields what direction does a positively charged particle’s field point
A
outwards
4
Q
what is coulombs law
A
Qq/4(pi)(epsilon)(r)^2
5
Q
factors that effect uniform electric field strength
A
permitivity of the medium
distance
Surface Area
6
Q
define electric potential
A
work done to move a unit positive charge from infinite distance away
7
Q
A
