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Transcript
```Electrostatic force due to spherical shell of charge
r
R


z
dF cos 

dF
Electric field due to a dipole
1
Infinite charged rod
Infinite sheet of charge
2
Uniform spherical charge distribution of radius R
Electric field lines
3
Electric field lines
Electric field lines
4
Properties of electric field lines
1. The electric field vector is tangent to the electric
field lines at each point.
2. The electric field lines start on positive charges
and end on negative charges.
3. The number of lines per unit area through a
surface perpendicular to the lines is proportional
to the strength of the electric field in a given region
Dipole in an external electric field
5
```
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