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Light Emitting Diode

The creation ...

Question

The creation of voltage or electric current in a material upon exposure to light is termed as

A

photo-ionic effect

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B

thermi-ionic effect

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C

photo-voltaic effect

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D

None of these.

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Solution

The correct option is C photo-voltaic effect
The generation of current or voltage in a material, when exposed to light is called photovoltaic effect.
The device which operates on this effect is called photo-voltaic device or solar cell. It is a p-n junction diode which converts solar energy into electrical energy.

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