In a p-n junction diode under reverse bias , the magnitude of electric field is maximum at_____________?

Correct answer: C. the p-n junction

A. the edge of the depletion region on the p-side
B. the edge of the depletion region on the n-side
C. the p-n junction
D. the center of the depletion region on the n-side

Explanation

Under reverse bias, the electric field rises from zero at the depletion-region edges to its maximum at the p-n junction, where the space-charge density produces the strongest field. Hence the peak occurs at the junction.

Written and checked by Zahid Hussain, MS Computer ScienceLast updated 16 September 2026

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