Parallel-Plate Capacitor: An ideal air-filled parallel plate capacitor with plate a separation of 4.0 cm has a plate area of 0.040 m2. What is the capacitance of this capacitor with air between these plates? (?0 = 8.85 × 10-12 C2/N ? m2)
A. 89 pF
B. 8.9 pF
C. 0.89 pF
D. 8.9 µF
E. 8.9 nF
Answer: B
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