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A parallel plate capacitor of area 10cm2 in vacuum has a capacitance of 10-2\(\mu\)F. What...

Physics
JAMB 1993
A parallel plate capacitor of area 10cm2 in vacuum has a capacitance of 10-2\(\mu\)F. What is the distance between the plates?(e = 9 x 10-12fm)
  • A. 9 x 10-13m
  • B. 9 x 10-7m
  • C. 9 x 10-3m
  • D. 9 x 107m
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Correct Answer: Option B
Explanation
C = \(\frac {\varepsilon_o\ A}{d}\)

10-2 x 10-6 = \(\frac {9 \times 10 ^{-12}}{d}\) x 10-4

= 9 x 10-7m
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