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CGP EDU Academic Team
Published on: September 12, 2026
Three concentric spherical metallic shells JC, Y and Z of radius a, b and c respectively [a < b < c] have surface charge densities σ, -σ and σ, respectively. The shells X and Z are at same potential. If the radii of X & Y are 2 cm and 3 cm, respectively. The radius of shell Z is_____cm.
Text Solution
Verified by ExpertsThe correct answer is:
5
(5)
The charges on the spheres are
It is given that Vx = Vz
So,
c = a + b = 2cm + 3cm = 5cm
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