Question

A parallel-plate air-filled capacitor having area 60 cm² and plate spacing 4.0 mm is charged to a potential difference of 450 V. Find

(a) the capacitance,__13.3  pF

(b) the magnitude of the charge on each plate,

___5.985nC

(c) the stored energy,

_____µJ

(d) the electric field between the plates, and

_112500_ V/m

(e) the energy density between the plates.

_(e) the energy density between the plates.

show all work pleas

Answer 1

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the energy-density of a capacitor is  u=(C*V^2)/(2A*d)=0.056 J/m^3