A Parallel Plate Capacitor, Filled with Air, Has Circular Plates

question 62

Multiple Choice

A parallel plate capacitor, filled with air, has circular plates with a separation gap of 1.5 mm. If it is desired to store 12 mJ in this capacitor, what must the plate area be for a voltage of 1.5 kV?

• A) 1.10 m²
• B) 0.55 m²
• C) 0.90 m²
• D) 1.8 m²

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