Two metal spheres of radius R and 3R have same surface charge density \(\sigma\). If they are brought in contact and then separated, the surface charge density on smaller and bigger sphere becomes \({\sigma }_{1}\)and \({\sigma }_{2}\), respectively. The ratio \(\frac{{\sigma }_{1}}{{\sigma }_{2}}\) is

[JEE Main 2025, 8 Apr (Shift 1)]

Question

Two metal spheres of radius R and 3R have same surface charge density \(\sigma\). If they are brought in contact and then separated, the surface charge density on smaller and bigger sphere becomes \({\sigma }_{1}\)and \({\sigma }_{2}\), respectively. The ratio \(\frac{{\sigma }_{1}}{{\sigma }_{2}}\) is

[JEE Main 2025, 8 Apr (Shift 1)]

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Two metal spheres of radius R and 3R have same surface charge density \(\sigma\). If they are brought in contact and the…

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