Summary - Unit 7 - Electric Magnetic Fields

FTID IDE
electric field
positive charge experiences
-


an area where a a



non-contact force



electric field strength
-
the force per unit charge on a particle
in the field



E For
:
=


↓
electric field strength (NC-


↑ pd of source (v)
~
↑
from positive S
E= - separation
places (m)
of to negative uniform field radial field




Coulomb's law the force between two
charged particles
-




Coulomb's
-
> constant


=
F=Q
k go 8 99x10" Nm2c
= -




& 27 =
8 .
85x10-2 Fm

(N) separation
force charge permitivity of free space

of particles(m)

electrostatic
potential energy
-




energy a particle has due to its
position


↑
in a field

Q
w = V =
-
electric potential-energy unit
charge positive to it
per for a
charge due


position in a field

, lines
equipotential if charge this No
-


line ,
a moves
along
WORK IS DONE

-

line of constant
potential
PERPENDICULAR field lines
-




always to




D
for two positive charges
-argaphs for positive and
negative charges

-

=
*Fr
> r
-




& in