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Which outcome impairs operation when electrons experience high tunneling?

A)Increased dark current in photodiode
B)Improved fuel cell reaction rate
C)Elevated battery energy storage density
D)Stabilized high-temperature superconductor film

💡 Explanation

Increased dark current in a photodiode results when unwanted tunneling occurs because electrons bypass the intended energy barrier via Quantum Tunneling rather than due to incident photons; therefore this produces noise, rather than signal which would enhance performance.

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