Pinchikilla mast'ay
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Pinchikilla mast'ay nisqaqa iskay iñup pinchikilla chaqnanpura chhikan kaymi tupunapaq.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/c/c7/Polaridad.png)
VA - VB: pinchikilla chaqnapura puchu,
E: pinchikilla suyup sinchi kaynin newton/coulomb,
r: A, B iñukunap karu kaynin.