In an unblased p-n junction, holes diffu...

In an unblased p-n junction, holes diffuse from the p - region to n- region because

(a) free electrons in the n - region attract them

(b) they move across the junction by the potential difference

(c ) hole concentration in p - region is more as compared to n -region

(d) All of the above

Text Solution

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The correct Answer is:

Hole diffusion from p to n side can be viewed as " electron diffusion"from n to p side .
Diffusion occurs due to differnce regions .
An electrons (or hole ) diffuses where its concentration is less.

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In an unbiased p-n junction,

potential at p is more than that at n

potential at p is less than that at n

potential at p is equal to that at n

potential at p is positive and that at n is negative

In an unbiased p-n junction, holes diffuse from the p-region to n-region because

free electrons in the n-region attract them.

they move across the junction by the potential difference.

hole concentration in p-region is more as compared to n-region.

all the above

In an unbiased pn junction holes diffuse from the p-region to n-region because

free electrons in the n region attract them

They move across the junction by the potential difference

Hole concentration in p-region is more as compared to n -region

All of these