10. A sphere of 10 cm diameter is suspended within a hollow sphere
of 12 cm diameter. If the inner sphere be charged to a potential
of 15,000 V and the outer sphere be earthed, the charge on the
inner sphere is
(a) 5 x 10-7 C
(b) 6 x 10-7 C
(c) 7 x 10-70
(d) 8 x 10-70
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Answer - B
Explanation:
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