Suppose the thickness of the depletion layer in a $P-N$ junction is $10^{-6} \ m$ and the value of the depletion barrier is $0.1 \ V$. Then the electric field is ....... $V \ m^{-1}$.
- A$10^7$
- B$10^{-6}$
- C$10^5$
- D$10^{-5}$
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