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The following graph depicts the I-V characteristics of which instrument?

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in Engineering Physics II by (679k points)
The following graph depicts the I-V characteristics of which instrument?

(a) Photodiode

(b) Light Emitting Diode

(c) Solar Cell

(d) Zener diode

This question was posed to me in quiz.

The above asked question is from Classification of Semiconductors topic in chapter Semiconductors of Engineering Physics II

1 Answer

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by (1.6m points)
Right answer is (c) Solar Cell

Easiest explanation: The generation of EMF by a solar cell is due to three basic processes: generation of electron-hole pair, separation of electrons and holes and collection of electrons by the front contact.

The p-side becomes positive and the n-side becomes negative giving rise to photo voltage.

The I-V characteristics of the solar cell are drawn in the fourth quadrant of the coordinate axis because a solar cell does not draw current but supplies the same to the load.

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