Concentric metallic hollow spheres of radii \( R \) and \( 4 R \) hold charges \( Q_{1} \) and \....

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Concentric metallic hollow spheres of radii \( R \) and \( 4 R \) hold charges \( Q_{1} \) and \( Q_{2} \) respectively. Given that
\( \mathrm{P} \)
surface charge densities of the concentric spheres are equal, the potential difference \( V(R)-V(4 R) \) is:
(1) \( \frac{3 Q_{1}}{16 \pi \varepsilon_{0} R} \)
(2) \( \frac{3 Q_{2}}{4 \pi \varepsilon_{0} R} \)
(3) \( \frac{Q_{2}}{4 \pi \varepsilon_{0} R} \)
(4) \( \frac{3 Q_{1}}{4 \pi \varepsilon_{0} R} \)


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