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How much energy is stored by the electric field between two square plates, 8.1 cm on a side.?
How much energy is stored by the electric field between two square plates, 8.1 cm on a side, separated by a 1.5 mm air gap? The charges on the plates are equal and opposite and of magnitude 420 µC.
Help me please!!!!!!!!!!!!!
Calculate capacitance:
C = [(8.85 * 10^-12) * A] / D
C = [(8.85 * 10^-12) * (0.081²)] / (0.0015)
C = 3.87 * 10^-11 Farads
E = ½ Q²/C
E = ½ (420 * 10^-6)² / (3.87 * 10^-11)
E = 2278.49 J
hope this helps ^_^
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