P-N Junction Diode
In an unbiased n-p junction electrons diffuse from n - region to p - region because:
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Answer: (c)
- Diffusion is driven by a concentration gradient, not by attraction or potential difference.
- Electrons are majority carriers in n and minority in p, so they diffuse from n to p.
- So the answer is (c) electron concentration in n-region is more than in p-region.