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Two thin dielectric slabs of dielectric constants $K_1$ and $K_2$ ($K_1 < K_2$) are inserted between plates of a parallel plate capacitor, as shown in the figure. The variation of electric field 'E' between the plates with distance 'd' as measured from plate P is correctly shown by:
A
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B
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C
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D
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Detailed Solution
Electric field inside a dielectric $E \propto \frac{1}{K}$
As $K_1 E_2$: the field drops in the first slab and drops further in the second, returning to the air value between and outside the slabs.
As $K_1 E_2$: the field drops in the first slab and drops further in the second, returning to the air value between and outside the slabs.