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ไไไไไ
•
ไไไไไไไไไ
•
ไไไไไไไไไไ
ไไไไไไไ
ไไไไไ
ไไไไไไไไไ
กกกกกกกกกกกกก
กกกกกกกกกกกกก
(e)
กกกก กกกกก (ion)
600 B.C.: ไไไไไ
(Thales) ไไไ
ไไไไไไไไไไไ
ไไไไไไไไไไ
ไไไไไไไไไไไ
กกกกก (Electron)
กกกกกก Electricity กกกกกกกกกกก
Elektron กกกกกกกกกก กกกกกก
Benjamin Franklin
ไ.ไ. 1747
ไไไไไ ไไไไไไไไไไไ 2 ไไไ ไไไ
1. ไไไไไไไไไ (Static Electric)
2. ไไไไไไไไไไ
2.1 ไไไไไไไไไไไไไ (Direct
Current :
DC)
2.2 ไไไไไไไไไไไไไไ
(Alternating
Current : AC)
ไไไไไไไไไ :
ไไไไไไไไไไไ
ไไไไไไไไไไ
ไไไไไไไไไไ
ไไไไไไไไ
ไไไไไ ไไไ
ไไไไไไไไไไไ
ไไไไ
ไไไไไไไไไไ
ไไไไไไไไไไไ
ปปปปปปปปปปปปป
ปปปปปปปปปปป ปป
2 ปปปป ปปป
ปปปปปปปปปปปปป
(positive electric charge)
ปปปปปปปปปป
ปปปปปปป +1.6×10-19
Coulombs ปปป
ปปปปปปปปปป (Coulomb
Force)
ปปปปปปปป
ปปปปปปป
ปปปป
ปปปป
ปปปป
ปปปปปป
ปปป
ปปปปปปป
ปปปป
ปปปปปปปป
ปปป
ปปปปปปปป
ปปปปปปป
Plastic rubbed with fur becomes negatively charged,
glass rubbed with silk becomes positively charged
A charged comb attracts a piece of paper
กกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกกก
(Electrostatic Induction)(Electrostatic Induction)
ปปปปปปปปปปปปปปปปปปปปป
ปปปปปปปปปปปปปปปปปปปปปปปปป
ปปปป ปปปปปปปปปปปปปปปปปปปปป
ปปปปปปปปปปปป ปปปปปปปปปปปป
ปปปปปปปปปปปปปปปปปปปป ปปปป
ปปปปปปป PVC ปปปปปปปปปปปปปปป
ปปปป ปปปปปปปปปปปปปปปปปปป
ปปปปป ปปป ปปปปปปปปป
ปปปปปปปปปปปปปปปปปปปป ปปปปปป
ปปปปปปปปปปปปปปปปป
ปปปปปปปปปป ปปปปปปปป กกกกกก
กกกกก (Electric Force)
Coulomb's Law
2
21
r
QkQ
F =
ปปปปป F = ปปป (ปปปปปป, Newton)
Q1,Q2 = ปปปปปปปปปปปปปปปปป
ปปป 1 ปปป 2 (ปปปปปปป,
Coulomb)
r = ปปปปปปปปปปปปปปปปปปปป
ปปปปปปปปปปปปปปปปปปปปปปปปปป
ปปปปปปปปปปป ผผผผผผผ ปปปปป
ปปปปปปปปปปป ปปปปปปปปปปปปปป
ปปปปปปปปปปปปป ผผผผผผ ปป
ปปปปปปปปปปปป
ปปปปปปปปปปปปปปปปปปปปปปปปปปปปปป
ปปปปปปปปป (High Voltage Sorce)
(High Voltage Power Supply)
ป.ป. 2474 ปปปปปปปปปปปปปปปปปปปปปปปป
“Robert Jemson Van de Graaff”
ปปปปปปปปปปปปป (Direct
Current)
ปปปปปปปปปปปปปป
(ปปปปปปป)
ปปปปปปปปปป
ปปปป (ปปปปป
ปปปป)
ปปปปปปปปปปปป
ปปปปป(Electrolysis)
ปปปปปปปปปปปป
ปปปปป (Generator)
กกกกกกกกกกกก
กกกกก(Thermocouple)
กกกกกกกกกกกก
กกกกก(Solar cell)
กกกกกกกกกกกก
กกกกก(กกกกกก
กกกกก)
กกกกกกกกกกกก
กกกกกก
กกกกก Ohm
Resistor

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