A dielectric of permittivity3.1×10 11 F/m completely fills thevolume between two

Question

A dielectric of permittivity3.1×1011 F/m completely fills thevolume between two capacitor plates. For t>0 the electricflux through the dielectric is (7900*V*m/s^3)*t^3 . The dielectric is ideal and nonmagnetic; the conductioncurrent in the dielectric is zero. At what time does the displacement current in the dielectricequal 21muA? Any help would be helpful. A dielectric of permittivity3.1×1011 F/m completely fills thevolume between two capacitor plates. For t>0 the electricflux through the dielectric is (7900*V*m/s^3)*t^3 . The dielectric is ideal and nonmagnetic; the conductioncurrent in the dielectric is zero. At what time does the displacement current in the dielectricequal 21muA? Any help would be helpful.

Explanation / Answer

The displacement current I=0*dE/dt E=7900t^3 so dE/dt=3*7900*t^2. the dielectric of permittivity (sry i dont understand this unitF/m). is 3,1e-11 so I=3*7900*t^2*3,1e-11=21A so t=5,34s

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