Semiconductor Electronics Materials Devices And Simple Circuits

Physics
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In an unbiased n-p junction electrons diffuse from n-region to p- region because

A
electrons travel across the junction due to potential difference.
B
electrons concentration in n region is more as compared to that in p-region.
C
holes in p-region attract them.
D
only electrons move from n- to p- region and not the vice-versa.
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