# ^Point charge

Point charge

A body of almost no size is called a point body or discrete body i.e. a sphere of radius R → 0 is a point like body.  Both field & potential are not defined on a discrete charge, as r → 0 implies E & V → ∞. Outside the point charge field & potential are

Field of a point charge has following properties

1. radially outward if charge is positive & inwards if it is negative.

2. at finite distance around it, field is spherically symmetric & obeys inverse square law i.e. it is not uniform

3. at infinite distance from the it, field is zero

4. maxi. it the charge is placed in vacuum or air.

Rate this post
error: Content is protected !!