29. Consider an infinitesimal segment of the rod, located between xand x + dx. It has length dxand contains charge dq = λdx = cx dx. Its distance from P1is d + xand the potential it creates at P1is dVdqdxcx dx=+=+141400ππεε.To find the total potential at P1, we integrate over the length of the rod and obtain (in SI
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Trigraph, International System of Units, length dx, Cx Dx