Transcript Electroscope Charging By Induction and Conduction Power Point

CHARGING BY
INDUCTION &
CONDUCTION
STARRING
THE ELECTROSCOPE
Charges are balanced
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- +
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-
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Neutral Electroscope
-+-
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-
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Neutral rod brought near + +
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-
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No Reaction
-+- - +- - + - +
- - Negative rod brought near
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Negative charge by Induction
-+- - +- - + -
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Electrons move down to leaves
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-+
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-+
Leaves become negative
Same charges repel
Temporary Dipolar charge
Remove negative rod
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+
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-
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-+
Leaves will collapse
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- +
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-
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Back to Neutral Electroscope
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- Positive rod brought near +
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Positive Charge by Induction
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-
-+
-- - -+
- up to sphere
Electrons move
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+
Leaves become positive
Same charges repel
Temporary Dipolar Charge
Remove positive rod
-- -+ -+
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Leaves will collapse
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- +
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Back to Neutral Electroscope
- + --- - - +- + Negative rod makes contact +
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Negative Charge by Conduction
-- + +- - - - -+- - + - + -- - -+
Creates a Bridge
--+
-- - - -+
+---+
+
Leaves become negative
Like charges repel
Electrons are added
Remove Negative Rod
-- +
--+
- - --+-- +
--+
+
+
Leaves stay negative
Like charges still repel
Permanent Negative Charge
Touch sphere with finger
- --- - -+
-+
Extra Electrons are removed
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-- - - ---++
--+
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Ground Negative Charge
Charges are Balanced
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- +
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Back to Neutral Electroscope
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-
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Positive rod makes contact +
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Positive Charge by Conduction
-+- - - - - + -+
Creates a bridge +
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+
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+ Leaves become positive +
Like charges repel
Electrons are removed
Remove positive rod
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-+
-
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+
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+ Leaves stay positive +
Like charges still repel
Permanent Positive Charge
Touch sphere with finger
Electrons are replaced
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- - - - -+
-
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Ground Positive Charge
Charges are Balanced
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- +
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Back to Neutral Electroscope