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Which mechanism limits forward current through a Shockley diode?

A)Avalanche multiplication in the depletion region
B)Zener effect across the sharp junction
C)Ohmic resistance of bulk semiconductor
D)Surface recombination reduces diffusion length

💡 Explanation

Current is limited as the voltage increases because *Ohmic resistance heating* causes material temperature rise. This limits maximum current, therefore preventing catastrophic failure down range, rather than solely avalanche that may begin this process.

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