(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A uniformly charged insulating rod of length 14cm is bent into the shape of a semicircle (looks like a "C"). The rod has a total charge of (-7.50E-6C). find the electric potential at O, the center of the semicircle

2. Relevant equations

v= ke[tex]\int[/tex]dq/r

3. The attempt at a solution

after integrating I get: KeQ/r

=Ke(-7.50E-6)/(0.14m)

For the semicircle will the radius be 0.7m? I'm frustrated with this problem and maybe I'm just making a dumb calculation mistake.

The answer is: -1.51MV

Thank you in advance! :shy:

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# Homework Help: Electric potential and capacitance (semicircle problem)

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