Two thin conducting shells of radii R and 3 R are shown in the figure. The outer | TestHub

PhysicsMediummultiple choice

Two thin conducting shells of radii $R$ and $3 R$ are shown in the figure. The outer shell carries a charge +Q and the inner shell is neutral. The inner shell is earthed with the help of a switch S .

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Answer:

A, B, C, D

Solution:

(a) $V_{i} = \frac{k Q}{3 R} V_{0} = \frac{k Q}{3 R}$

(b) Earthing means $V = 0$

(c) $\frac{k q ^{'}}{R} + \frac{k Q}{3 R} = 0 \Rightarrow q^{'} = - q /3$ ]

(d) energy between the spheres increases.

Stream:JEESubject:PhysicsTopic:CapacitorSubtopic:Miscellaneous

⏱ 2mℹ️ Source: QB

Physics - Capacitor Question with Solution | TestHub

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