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Calculate the energy in the 4F capacitor.

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in Basic Electrical Engineering by (88.7k points)
Calculate the energy in the 4F capacitor.

(a) 128kJ

(b) 1.28kJ

(c) 12.8kJ

(d) 1280J

The question was posed to me by my school principal while I was bunking the class.

Question is from Energy Stored in a Charged Capacitor topic in section Capacitance and Capacitors of Basic Electrical Engineering

1 Answer

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Best answer
Right option is (c) 12.8kJ

The best explanation: From the expression:

WD = CV^2/2 = 4*80^2/2 = 12800J = 12.8kJ.

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