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  4. Charges Q , 2Q and -Q are given to three concentric conducting spherical shells A , B and C respectively, as shown in the figure. The ratio of charges on the inner and outer surfaces of the shell C will be <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-qalpe2c4cfxd.png />

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Q. Charges $Q$ , $2Q$ and $-Q$ are given to three concentric conducting spherical shells $A$ , $B$ and $C$ respectively, as shown in the figure. The ratio of charges on the inner and outer surfaces of the shell $C$ will be

Question

NTA AbhyasNTA Abhyas 2020Electrostatic Potential and Capacitance

Solution:

Due to induction of charge on surface facing each other will be equal and opposite.
Solution
Ratio $= - \frac{3}{2}$