CBSE Class 12-science Answered
why the solar cell is unbiased wheras the photodiode is biased?
Asked by rohitraman1115 | 21 Nov, 2018, 05:00: PM
Expert Answer
photo-diode used in electric/ electronic circuit is acting like a switch.
Under normal operation it is reverse biased so that it is not conducting.
When light/photon falls on the photo diode, electrons are released in the photodiode and
giving rise to conduction of current in the circuit.
But solar cell is acting like a power source and delivers electrical power to the electric/electronic circuit.
Hence it is forward biased so that it delivers current to the connected load
Answered by Thiyagarajan K | 22 Nov, 2018, 05:00: AM
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