charging by contact – friction. charging by friction: the transfer of electrons between two...
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Charging by Contact – Friction
Charging by Contact – Friction
Charging by Friction: the transfer of electrons between two different neutral objects when they are rubbed together
charging by friction video
Charging by Contact – Friction
Charging by Friction: the transfer of electrons between two different neutral objects when they are rubbed together
-materials hold on to electrons with varying strengths
Charging by Contact – Friction
Charging by Friction: the transfer of electrons between two different neutral objects when they are rubbed together
-materials hold on to electrons with varying strengths
How do we know which one will lose electrons and which one will gain electrons?
Charging by Contact – Friction
Charging by Friction: the transfer of electrons between two different neutral objects when they are rubbed together
Electrostatic Series: a list of materials arranged in order of their tendency to gain electrons
Electrostatic Series: a short list
tendency to relativeattract electrons charge
high rubber negativepolyethyleneebonitesilkfurwoolglass
low acetate positive
Using the electrostatic series: look up the two materials being rubbed together. The one higher on the series will become negative, the other will become positivetendency to relativeattract electrons charge
high rubber negativepolyethyleneebonitesilkfurwoolglass
low acetate positive
Using the electrostatic series: look up the two materials being rubbed together. The one higher on the series will become negative, the other will become positivetendency to relativeattract electrons charge
high rubber negativepolyethyleneebonitesilkfurwoolglass
low acetate positive
e.g. ebonite rubbed with fur
Using the electrostatic series: look up the two materials being rubbed together. The one higher on the series will become negative, the other will become positivetendency to relativeattract electrons charge
high rubber negativepolyethyleneebonitesilkfurwoolglass
low acetate positive
e.g. ebonite rubbed with fur-ebonite becomes negative because it is further up on the series
Using the electrostatic series: look up the two materials being rubbed together. The one higher on the series will become negative, the other will become positiveTry these: a) rubber rubbed with silk
b) wool rubbed on glass
c) polyethylene rubbed with glass
Using the electrostatic series: look up the two materials being rubbed together. The one higher on the series will become negative, the other will become positiveTry these: a) rubber rubbed with silk
rubber = negativesilk = positive
b) wool rubbed on glass
c) polyethylene rubbed with glass
Using the electrostatic series: look up the two materials being rubbed together. The one higher on the series will become negative, the other will become positiveTry these: a) rubber rubbed with silk
rubber = negativesilk = positive
b) wool rubbed on glasswool = negativeglass = positive
c) polyethylene rubbed with glass
Using the electrostatic series: look up the two materials being rubbed together. The one higher on the series will become negative, the other will become positiveTry these: a) rubber rubbed with silk
rubber = negativesilk = positive
b) wool rubbed on glasswool = negativeglass = positive
c) polyethylene rubbed with glasspolyethylene = negativeglass = positive
Charging by Contact – Friction
e.g. wool rubbed with glassBefore rubbing After rubbing
wool glass
neutral neutral5+ 3+5- 3-
Charging by Contact – Friction
e.g. wool rubbed with glassBefore rubbing After rubbing
wool glass wool glass
neutral neutral negative positive5+ 3+ 5+ 3+5- 3- 7- 1-
Charging by Contact – Friction
try this one: ebonite rubbed with fur
Charging by Contact – Friction
try this one: ebonite rubbed with furBefore rubbing After rubbing
fur ebonite
neutral neutral5+ 3+5- 3-
Charging by Contact – Friction
try this one: ebonite rubbed with furBefore rubbing After rubbing
fur ebonite fur ebonite
neutral neutral positive negative5+ 3+ 5+ 3+5- 3- 3- 5-