Question:
Two conducting shells of radius a and b are connected by a conducting wire as shown in figure. The capacity of system is:
Two conducting shells of radius a and b are connected by a conducting wire as shown in figure. The capacity of system is:
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If the outer spherical shell is grounded, the system behaves exactly like a spherical capacitor.
Updated On: Mar 19, 2026
- 4πvarepsilon₀ (ab)/(b-a)
- 4πvarepsilon₀ (a+b)
- zero
- infinite
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The Correct Option is A
Solution and Explanation
Step 1: Since the two shells are connected by a wire, they are at the same potential.
Step 2: The outer shell is grounded, so the system behaves like a spherical capacitor with: inner radius = a, outer radius = b
Step 3: Capacitance of a spherical capacitor: C = 4πvarepsilon₀ (ab)/(b-a)
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