Class notes Physics

Page No.!

Electric charges and Fields Date:
YOUVA




# Coulomb's laur


foyce b/w tuoo charges F= Q192 Permittivity
83 ff of air medium/
F =

med
4TT ( KEo)
k- dielectric constant of the medium




# Properties of Electic Field lines



Diredion of IField: tangent drawn to Field lines.
Two Rield lines will never intersect.
Field lines nevex take sharp turns.

Field lines produced by static charges will neved Form
closed Hoops
Divection of Field lines ate away From the body Fotitve charge
and towards the body for -ve charge
conductoys.
Elechic Held lines voill never pass through
to surface of conductoy
Electric Field lines ave always 1
through unit area! gives Electvic
00. of Field tines passing

Field Intensity (E)!


uniform
Non-uniform
Field
Field
EA > Eb > Ec
= EB Ec
EA




surrounding changed body a
magnitude of the chayge.
lined
No • o 01



pint charge : (l)
# Electric Field Intensity due to

, D
1
31% 3|
E
;*


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e 円




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e 3
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S

4 M




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a
m
M



Q
み

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でJ

上e

c e
1c e




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り
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