A fiber sheet of thickness 1 mm and a mica sheet of thickness 2 mm...

A fiber sheet of thickness 1 mm and a mica sheet of thickness 2 mm are introduced between two metallic parallel plates to form a capacitor. Given that the dielectric strength of fiber is

6400 \mathrm{kV} / \mathrm{m}

and the dielectric constants of fiber and mica are 2.5 and 8 respectively, the electric field inside the mica sheet just at the breakdown of fiber will be

Options

A $2000 \mathrm{kV} / \mathrm{m}$
B $2048 \mathrm{kV} / \mathrm{m}$
C $3200 \mathrm{kV} / \mathrm{m}$
D $6400 \mathrm{kV} / \mathrm{m}$

Correct answer

A. $2000 \mathrm{kV} / \mathrm{m}$

Step-by-step solution

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