A parallel plate capacitor of area 10cm 2 in vacuum has a capacitance of 10
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
Correct Answer: B. 9 x 10-7m
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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