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A Charged, Thin Sheet of Insulating Material + + + + + + + + + + +

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Page 1: A Charged, Thin Sheet of Insulating Material + + + + + + + + + + +
Page 2: A Charged, Thin Sheet of Insulating Material + + + + + + + + + + +

A Charged, Thin Sheet of Insulating Material

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E

Page 3: A Charged, Thin Sheet of Insulating Material + + + + + + + + + + +

1) There is a conducting spherical shell, inner radius A and outer radius B. If you put a charge Q on it, find the charge density everywhere.

2) There is a conducting spherical shell, inner radius A and outer radius B. A charge Q is put at the center. If you put a charge Q2 on the shell, find the charge density everywhere.

Page 4: A Charged, Thin Sheet of Insulating Material + + + + + + + + + + +

Electric field near a surface of a conductor

al

cap

EaEdSSdE

0a

Ea 0

E

Page 5: A Charged, Thin Sheet of Insulating Material + + + + + + + + + + +

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cap

EaEdSSdE

0a

Ea 0

E (the total field at any point

between the plates)

Two parallel conducting plates

Page 6: A Charged, Thin Sheet of Insulating Material + + + + + + + + + + +

An Apparent Contradiction

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0

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Page 7: A Charged, Thin Sheet of Insulating Material + + + + + + + + + + +

An Apparent Contradiction

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0

E

?2 0

E Near the surface of any conductor in electrostatics

0

E

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2 02

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