Electrostatics Question 72

Question: In a spherical condenser radius of the outer sphere is $ R $ . The different in the radii of outer and inner sphere in$ x $ . Its capacity is proportional to

Options:

A) $ \frac{xR}{(R-x)} $

B) $ \frac{x(R-x)}{r} $

C) $ \frac{R(R-x)}{x} $

D) $ \frac{R}{x} $

Show Answer

Answer:

Correct Answer: C

Solution:

$ C\propto \frac{ab}{b-a}; $ a = R ? x, b = R so, $ C\propto \frac{R(R-x)}{x} $



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