In an unbiased p-n junction, consider the following options: 1. Potential at p is more than that at n. 2. Potential at p is less than that at n. 3. Potential at p is equal to that at n. 4. Potential at p is +ve and that at n is - ve. Chose the correct option!

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Q. Consider an unbiased

p - n

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b volts

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V volts

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Q. In a pn junction
a) high potential at n side and a low potential at p side
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c) p and n both are at the same potential
d) undetermined

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The potential barrier existing across an unbiased p-n junction is 0.2 volt. What minimum kinetic energy a hole should have to diffuse from the p-side to the n-side if (a) the junction is unbiased, (b) the junction is forward-biased at 0.1 volt and (c) the junction is reverse-biased at 0.1 volt?

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II) potential barrier remains same.
III) width barrier remains decreases.
IV) p-type is at higher potential than the n-type.

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