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Where did the charge go?
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The charge went into the glass.
See Leyden Jar at Wikipedia
Fill in The Blanks Conservation of Charge Notes
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 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 possible
(not an even multiple
of 1.6 x 10-19
C)
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