A capacitor having capacitance of 5 uF is charged to a potential difference of 10,000 V. The energy stored in the capacitor is__________?
Correct answer: D. 250 joules
- A. 50 joules
- B. 150 joules
- C. 200 joules
- D. 250 joules
Explanation
Capacitor energy is W = ½CV² = ½ × 5 × 10⁻⁶ × (10,000)² = 250 J. The voltage is squared, so even a small capacitance stores substantial energy at this voltage.
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