### Step 2: Span the charge distribution

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Assuming a uniform charge distribution along a line, the variable which
appears to be the easiest to use to span the distribution is the
variable *x*, which follows along the line from negative infinity to positive infinity. Thus the charge infinitesminal dq will be the product of charge density and dx.

"http://www.physics.udel.edu/~watson/phys208/lineofcharge/lineofcharge2.html"

Last updated Sept. 24, 1997.

Copyright George Watson, Univ. of Delaware, 1997.