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Capacitance (A-level only)

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Question 8

In a medical defibrillator circuit, an initially uncharged capacitor is charged by a constant-current power supply of 2.4 mA. After a charging duration of 150 ms, the potential difference across the capacitor is measured to be 1.8 kV1.8\text{ kV}1.8 kV. What is the capacitance of the capacitor?

2.0×10−10 F2.0 \times 10^{-10}\text{ F}2.0×10−10 F

2.0×10−7 F2.0 \times 10^{-7}\text{ F}2.0×10−7 F

2.0×10−4 F2.0 \times 10^{-4}\text{ F}2.0×10−4 F

8.9×10−6 F8.9 \times 10^{-6}\text{ F}8.9×10−6 F

Capacitance (A-level only) Questions

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