3. Consider the electric potential V generated by two pairs of positive and negative pointcharges of charge values +g as depicted in the figure:V(b,r,0)The precise form of this potential is given by11V = 9+ r - 2br cos e+r2 + 2br cos 011P+r2 - 2br sin 062 +r2 + 2br sinShow by expressing the function above as a power series expansion in b about b = 0 thatin the limit b«r the function is approximately equal to V = (3qt /r) cos(20). This is aform of electric quadrupole.

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Answered: 3. Consider the electric potential V…

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