Physics
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A pair of copper electrodes, each with a diameter of 4.0 cm, are separated by 0.70 mm. What is their capacitance if these electrodes are connected to a 200 V power supply?
1.6 × 10-11 F
2.3 × 10-11 F
4.4 × 10-11 F
5.2 × 10-11 F