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Question

To reverse bias a photo-diode:

A
cathode of the detector is set at a higher electric potential than the anode.
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B
anode of the detector is set at a higher electric potential than the cathode.
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C
cathode and anode are set at the same electric potential.
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D
none of the above.
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Solution

The correct option is A cathode of the detector is set at a higher electric potential than the anode.
Reverse biasing a photo-diode is accomplished by setting the cathode of the detector at a higher electric potential than the anode's. In other words, applying a negative voltage to anode.

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