Electrostatics and electric fields summary sheet

electrostatics electric fields




I
O two objects touch -p new charge

what 3 touch
if ?
happens

①new =
NB ! takes into account F =
↓ cnewtons)
signs
r =
m (meters)
E = ."
N (Newtons per
Coulomb)

② what charge was transferred Q Or q =
C (coulomb)




Q transferred =
Goriginal
-
Onew c[ =
x10
- 2 >
-
[

mc = 3 >
-




x10
-




uc x10 6 [
I
-
= -
>


N C =
x10
-
9 - C
Vis ! include in Formula , but in
ignore




answers
signs
PC =
x10
-
1
- C

:
eg

& transferred =
3-C-1) OR


=
4[


ex
-
planation

③ Number of electrons transferred movement



charge to =-

=
c

+2C
-


4)
Ne- -
4/ ↳) 6x10-19C
charge of e-1 ,

number of e- F will be left

↳ Atways GOES #
NB ! electrons transfer from to most pos
most
neg .




-
-
2 => 6= IC
ie) +0
-

S
=7
e -e e-
-




NB !
greater distance
↳ smaller/weaker Force
④
.




Coloumbs law

9 x10 - 9N ? 2


-
-



. m c




F = S UPER NB !
F Force ! FL Q , Q2 - =
Felectrostatic
VECTOR 9
-
=
=
D

Newton's 3rd law

↳ Q . B 02 experience same f Fd
+
r2 itis atrestoneat, , -


Field
NB !
always say attract or
repel in answer
F field =
Fg ,
bes its

still !
But , include NO
signs in calculations