An uncharged capacitor is connected to a power supply which supplies a constant current of 12 μA12\text{ }\mu\text{A}12 μA. After 250 ms, the potential difference across the capacitor is 6.0 kV6.0\text{ kV}6.0 kV. What is the capacitance of the capacitor?
2.0×10−10 F2.0 \times 10^{-10}\text{ F}2.0×10−10 F
5.0×10−10 F5.0 \times 10^{-10}\text{ F}5.0×10−10 F
2.0×109 F2.0 \times 10^9\text{ F}2.0×109 F
5.0×109 F5.0 \times 10^9\text{ F}5.0×109 F