When a Capacitor Has a Charge of Absolute Value 80

question 76

Multiple Choice

When a capacitor has a charge of absolute value 80 µC on each plate the potential difference across the plates is 10 V.How much energy is stored in this capacitor when the potential difference across its plates is 120 V?

• A)0.36 J
• B)58 mJ
• C)0.90 GJ
• D)0.48 mJ
• E)0.12 J

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