A 4 μF capacitor is charged to 6 V. How much energy does it store?
Answer and explanation
Correct answer: D. 72 μJ
- Step 1: .
- Step 2: μJ.
Answer
72 μJ.
Why not the others: 144 μJ: the factor is missing. 12 μJ: the voltage is not squared. 24 μJ: that is the charge, not the energy.
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