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Q.

Two charged spheres of radii R₁ and R₂having equal surface charge density. The ratio of their potential is

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a

$R_{1} / R_{2}$

b

${(R_{2} / R_{1})}^{2}$

c

$R_{2} / R_{1}$

d

${(R_{1} / R_{2})}^{2}$

answer is A.

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Detailed Solution

$V = \frac{k Q}{R}, Q α R^{2}$

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Two charged spheres of radii R1 and R2 having equal surface charge density. The ratio of their potential is