What is the capacitance of a 1.0" diameter steel ball-bearing? A. 1.4 pF B. 14 pF C. 140 pF D. Zero, since there is only one con ducting surface Capacitance is not defined for a single conducting surface E.
1 answer:
Answer:
option A
Explanation:
steel in a conducting ball of diameter
2 r = 1 '' = 2.54 cm = 2.54 × 10⁻² m
Potential due to conducting steel ball
C = 0.1411 × 10⁻¹¹ Farad
C = 1.411 × 10⁻¹² Farad
C = 1.4 pF
Hence, correct answer is option A
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