Two isolated metallic solid spheres of radii R and 2R are charged such that both of these have same charge density 12 µC/m 2 . The spheres are located far away from each other, and connected by a thin conducting wire. Find the new charge density on the bigger sphere in µC/m 2 .
Text Solution
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(10)
Surface charge density = σ
Charge on bigger sphere Q 2 ´ = 
. C 2
Q 2 ´= 
× 4πε 0 × 2R = 
Surface charge density on bigger sphere σ´ = 
= 
.
Put σ = 12 µC/m 2
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