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  4. Two charged sphere A and B, shown below are isolated conductors, A having +Q charge and B having +4 Q charge and radius rA=1 / 2 rB. OX, is a straight line passing through their centres. <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/ac5573ebdac43ba07fbeaa917c5308d7-.png /> The potential ‘V’ at any point on OX, plotted against the distance ‘x’ of the point from O, will be nearly

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Q. Two charged sphere A and B, shown below are isolated conductors, A having +Q charge and $B$ having $+4 Q$ charge and radius $r_A=1 / 2 r_B$. OX, is a straight line passing through their centres.
image
The potential ‘$V$’ at any point on $OX$, plotted against the distance ‘$x$’ of the point from $O$, will be nearly

Electrostatic Potential and Capacitance

Solution:

Correct answer is (c)