Questions
A parallel-plate capacitor is formed by two plates, each of area separated by a distance of 1 mm. A dielectric of dielectric constant 5.0 and dielectric strength is filled between the plates. Find the maximum charge that can be stored on the capacitor without causing any dielectric breakdown.
detailed solution
Correct option is A
If Q be the charge on the capacitor, the surface charge density is
and the electric field is .
This should not exceed the dielectric strength .
Thus, the maximum charge is given by
Or,
.
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