The energy stored inside a capacitor is given by the relation:
Correct answer: C. Energy = ½ CV2
- A. Energy = ½ CV
- B. Energy = ½ C2V
- C. Energy = ½ CV2
- D. Energy = ½ C/V
Explanation
The graph of the charge on a capacitor against the voltage across it shows a linear line starting from origin marking a direct proportionality. The area under the line is the energy stored in the capacitor which is ½ x Q x V. Since Q= CV; Substituting Q by CV is the energy equation would give us:½ C V2
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About Capacitors
Capacitors store electric charge and energy in an electric field between conductors. Work includes capacitance, the relation Q = CV, dielectric materials, charging and discharging, energy formulas, and combinations of capacitors in series and parallel. Electric potential difference is needed to understand why charge and stored energy change.
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