A pair of copper electrodes, each with a diameter of 5.0 cm, are separated by 0.80 mm. What is the magnitude of the charge on each electrode if these electrodes are connected to a 300 V power supply?

• A. 1.6 × 10^-9 C
• B. 3.5 × 10^-9 C
• C. 6.5 × 10^-9 C
• D. 7.4 × 10^-9 C

Answer: (C)