How much energy is stored by the electric field between two square plates, 9.5 c

Question

How much energy is stored by the electric field between two square plates, 9.5cm on a side, separated by a 2.5-mm air gap? The charges on the plates are equal and opposite and of magnitude 13nC . Express your answer using two significant figures and include the appropriate units. How much energy is stored by the electric field between two square plates, 9.5cm on a side, separated by a 2.5-mm air gap? The charges on the plates are equal and opposite and of magnitude 13nC . Express your answer using two significant figures and include the appropriate units.

Explanation / Answer

C= Ae/d = 9.5*10^-4*8.814*10^-12/(2.5*10^-3)

=3.349 nF

Energy = 0.5*q^2/c

= 0.5*(13*10^-9)^2/(3.349*10^-12)

= 0.0000252314 J

=25.231 micro jule

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