Electric Field Strength Flashcards
1
Q
Define electric field strength
A
The force per unit charge experienced by a test charge in an electric field
2
Q
Define electric field strength in a uniform field
A
E = V/d
(potential gradient)
3
Q
Define electric field strength in a radial field
A
E = 1/4πe x Q/r2
4
Q
Derive the equation for work done moving a charged particle between parallel plates
A
w = F x d
F = EQ
d = V/E
W = EQ x V/E
W = QV
5
Q
Describe what happens when a charged particle is fired at a right angle to an electric field
A
- particle experiences a constant electric force in a direction
- causes particle to accelerate
- follows a parabolic shape
6
Q
Which direction in a field will a particle follow if it is positive ?
A
The direction of the field, positive to negative
