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प्रश्न
Two spherical conductors A and B of radii a and b(b > a) are placed concentrically in the air. B is given a charge +Q and A is earthed. The equivalent capacitance of the system is ______.
विकल्प
`4piepsilon_0 ["ab"/"b - a"]`
`4piepsilon_0 ["a + b"]`
`4pi epsilon_0 "b"`
`4pieepsilon_0 ("b"^2/"b - a")`
MCQ
रिक्त स्थान भरें
उत्तर
Two spherical conductors A and B of radii a and b(b > a) are placed concentrically in the air. B is given a charge +Q and A is earthed. The equivalent capacitance of the system is `underline(4pieepsilon_0 ("b"^2/"b - a"))`.
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