discharge
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Electrostatics
Discharge
Charged statemay be
Charged statemay be
Positive+- +
++-Neutral+- +
++-
-
-Negative+- +-
+- +
-
--
Charged statemay be
Positive+- +
++-Neutral+- +
++-
-
-Negative+- +-
+- +
-
--
Charged statemay be
Positive+- +
++-Neutral+- +
++-
-
-Negative+- +-
+- +
-
--
Positive+- +
++-Neutral+- +
++-
-
-Negative+- +-
+- +
-
--
Charged statemay be
may be
+ -
++- +++
++-+++
Positive+- +
++-Neutral+- +
++-
-
-Negative+- +-
+- +
-
--
Charged statemay be
may be
+ -
++- +++
++-+++
may be
-- -
-- +-- -
+ -
++-
Positive+- +
++-Neutral+- +
++-
-
-Negative+- +-
+- +
-
--
Charged statemay be
may be may be
measured in+ -
++- +++
++-+++
-- -
-- +-- -
+ -
++-
+ -
++-
Positive+- +
++-Neutral+- +
++-
-
-Negative+- +-
+- +
-
--
Charged statemay be
may be
+ -
++- +++
++-+++
may be
-- -
-- +-- -
measured in
Coulombs(C)
Positive+- +
++-Neutral+- +
++-
-
-Negative+- +-
+- +
-
--
Charged statemay be
may be
+ -
++- +++
++-+++
may be
-- -
-- +-- -
+ -
++-
Positive+- +
++-Neutral+- +
++-
-
-Negative+- +-
+- +
-
--
Charged statemay be
may be
+ -
++- +++
++-+++
may be
+ -
++- -- -
-- +-- -
measured in
Coulombs(C)
Neutral+- +
++-
-
-
+++
+++
--
--
--
6+
6-
Negative+- +-
+- +
- +++
+++
--
--
-- -
6+
7-
Positive+- +
++--
+++
+++
--
-
--
6+
5-
- -1,6 x 10-19 C
- -1,6 x 10-19 C
= =
= -0,00000000000000000016 C
Neutral+- +
++-
-
-0 C
-
-1,6 x 10-19 C+ -
++-
1 more e- than p+
-
-1,6 x 10-19 C-
1 more e- than p+
-
½(-1,6 x 10-19 C)-
½ more e- than p+
-
½(-1,6 x 10-19 C)= -0,8 x 10-19 C
-
½ more e- than p+
-
½(-1,6 x 10-19 C)= -0,8 x 10-19 C
-
½ more e- than p+
Principle of charge quantization
It is not possible for an object to have a charge which is not a whole number of the electron’s charge.
-
2(-1,6 x 10-19 C)= -3,2 x 10-19 C
-
2 more e- than p+-
-
10(-1,6 x 10-19 C)= -1,6 x 10-18 C
-
10 more e- than p+---------
6,25 x 1018(-1,6 x 10-19 C)= -1 C
-
6,25 x 1018 more e- than p+
= -2 C-
2(6,25 x 1018) more e- than p+
+1,6 x 10-19 C
1 fewer e- than p+
+ -
++-
+1,6 x 10-19 C
1 fewer e- than p+
+
-
½(+1,6 x 10-19 C)= +0,8 x 10-19 C
-
½ fewer e- than p+
+
2(+1,6 x 10-19 C)= +3,2 x 10-19 C
-
2 fewer e- than p+
+
10(+1,6 x 10-19 C)= +1,6 x 10-18 C
-
10 fewer e- than p+
+
6,25 x 1018(+1,6 x 10-19 C)= +1 C
-
6,25 x 1018 fewer e- than p+
+
= +2 C-
2(6,25 x 1018) fewer e- than p+
+
Charged state
Charged state
Difference in
Charged state
Difference in creates a
Charged state
Difference in creates a
Potential Difference (pd)
Charged state
Difference in creates a
may cause
Potential Difference (pd)
Charged state
Difference in creates a
Potential Difference (pd)
Discharge
may cause
Charged state
Difference in creates a
Potential Difference (pd) may cause
removes Discharge
creates a
Potential Difference (pd) may cause
removes
Charged state
Difference in
Discharge
Charged state
Difference in creates a
may cause
removes Discharge
Potential Difference (pd)
Charged statecreates a
Difference in
Potential Difference (pd) may cause
removes
is movement of
Discharge
removes
Charged state
Difference in creates a
Potential Difference (pd) may cause
is movement of
----Electrons
Discharge
Charged statecreates a
Difference in
Potential Difference (pd) may cause
Discharge
removes
is movement of
----Electrons
e.g. 1
Two identical insulated metal spheres discharge. What is each one’s final charge if their initial charges were:
+4 C and -4 C ?
+-
+-
-4 C+4 C
++++
--
--
+-
-4 C
--
--
+-+4 C
++++
+-+4 C
++++
+-
-4 C
--
--
+-
+-
-4 C+4 C
++++
--
--
+-
+-
+4 C
++++
-4 C
----
-4 C
+-
+-
0 C
++++
0 C
----
+-
+-
0 C
++++
0 C
----
Final charge =
=
+-
+-
-4 C+4 C
++++
--
--
=
= = 0 C
+-
+-
0 C
++++
0 C
----
e.g. 2
Two identical insulated metal spheres discharge. What is each one’s final charge if their initial charges were:
+4 C and 0 C ?
+-
+-
++ --
0 C+4 C
++++
+- +
+-+
++
++-
+++
+- +
+--
--
--+
---
+-
+-
more –
less-
+-
+-
++ --
0 C+4 C
++++
+-
+-
++
+4 C
++++
0 C-
--2 C
+-
+-
++
++
+2 C
+
++2 C
--
=
+-
+-
++ --
0 C+4 C
++++
+-
+-
++ --
+2 C +2 C
++
+
+=
= = +2 C
+-
+-
++ -- +
++2 C
+
++2 C
+-
+-
++ -- +
++2 C
+
++2 C
e.g. 3
Two identical insulated metal spheres discharge. What is each one’s final charge if their initial charges were:
-6 C and -4 C ?
+-
+-
-4 C
--
--
-6 C
------
+-
+-
-4 C
--
--
-6 C
------
+-
+-
-4 C
--
--
-6 C
--- ---
-1 C
+-
+-
-5 C
--
--
-5 C
--- --
-
+-
+-
-5 C
--- --
-5 C
--
--
-
+-
+-
-5 C
--- --
-5 C
--
--
-
=
+-
+-
-4 C
--
--
-6 C
------
=
= = -5 C
+-
+-
-5 C
--- --
-5 C
--
--
-
e.g. 4
Two identical insulated metal spheres discharge. What is each one’s final charge if their initial charges were:
+8 C and +2C ?
+-+
-+-
+-+
-+-
+2 C
++
+8 C
++++++
+ +
+-+
-+-
+-+
-+-
+2 C
++
+8 C
++++++
+ +
+++
---
+++
+2 C
++
+8 C
++++++
+ +
-3 C
---
+++
-- +
++
+5 C
++
+5 C
++++++
+ + --
--
+
++-
-- +++
---
+++++
+++ +
+
+5 C+5 C
+
++-
-- +++
---
+++++
+++ +
+
+5 C+5 C
=
+-+
-+-
+-+
-+-
+2 C
++
+8 C
++++++
+ +
=
= = +5 C
+
++-
-- +++
---
+++++
+++ +
+
+5 C+5 C
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