Which outcome occurs from exceeding photomultiplier tube anode voltage?

💡 Explanation

Increased anode voltage strengthens the electric field, accelerating more electrons; this causes increased electron space charge near the anode because the electron current becomes too high which saturates the space. Therefore, a buildup occurs near the anode, rather than efficient electron collection.

• Which mechanism governs the increasing electrical resistance observed when a silicon wafer is increasingly doped with boron?
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