A parallel plate capacitor has a common plate area of 5 x 10\(^{-8}\)m2 and plate...
PHYSICS
JAMB 1998
A parallel plate capacitor has a common plate area of 5 x 10\(^{-8}\)m2 and plate separation of 2 x 10\(^3\)m, Assuming free space,
What is the capacitance? [\(\varepsilon\)o = 9.0 X 10-\(^{-12}\)C2N-1m-2]
- A. 2.25 x 10-17F
- B. 4.50 x 10-17F
- C. 2.25 x 10-16F
- D. 4.50 x 10-16F
Correct Answer: A. 2.25 x 10-17F
Explanation
C = \(\frac{{\varepsilon}_oA}{d}\)
= \(\frac{5{\times} 10^{-8} {\times} 10^{-12}{\times} 9}{2 {\times}10^{-3}}\)
= 22.5 x 10-17F
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