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In the middle of the depletion layer of a reverse-biased p-n junction, the

Asked in JEE Main 2003 · Depletion region and barrier potential

Answer: (3) electric field is maximum

Step-by-step solution

Inside the depletion layer the fixed ion charge creates a field pointing from n to p.

Moving in from either edge, the field grows as more uncovered charge is enclosed.

It reaches its largest value at the metallurgical junction, the middle of the layer.

Note: the printed key gives (a); the field is maximum, not zero, at the junction. See DEFECTS.md.

Why the other options are wrong

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