Where did the charge go?
St. Mary's Physics YouTube Channel
School blocks YouTube? Use the file below.
The charge went into the glass.
See Leyden Jar at Wikipedia
E) Elementary Charge - smallest charge known to exist in nature
Charges come in whole number multiples of
1.6 x 10-19
Coulombs
p
+1.6 x
10-19 C
(Reference)
e-
-1.6 x 10-19 C
(Reference)
Ex) Object has 4 p, 1 e-, charge?
+ 3 elem. charges or ...
+ 4.8 x 10-19 C
Ex) How many excess charges are
there in an object with a charge of
-9.6 x 10–19 C?
6 excess electrons
Divide by
1.6 X 10-19
Coulombs
To find # of
elementary charges
|
Ex) A metal sphere -1.1 × 10-6 C. How many more electrons than protons are on the sphere?
|
|
|
|
|
| a) 1.8 × 1012 | b) 5.7 × 1012 |
| c) 6.9 × 1012 | d) 9.9 × 1012 |
Ratio
1 elementary charge
1.6 X 10-19 coulombs
Divide by 1.6 × 10-19 C
| Scientific Notation/TI83Plus |
-1.1 × 10-6 C
(1.6 × 10-19 C)
c) 6.9 × 1012 electrons
|
Ex) An object
can not
have a charge of |
|
|
|
|
| a) 3.2 x 10-19 C | b) 4.5 x 10-19 C |
| c) 8.0 x 10-19 C | d) 9.6 x 10-19 C |
b) 4.5 x 10-19 C
(not an even multiple
of 1.6 x 10-19
C)
© Tony Mangiacapre.,
- All Rights Reserved [Home]
Established 1995
Use any
material on this site (w/ attribution)