Advertisements
Advertisements
Question
State the principle of solar cells.
Solution
A solar cell is an unbiased pn-junction that converts sunlight energy directly into electricity with high efficiency.
Principle: A solar cell operates on the photovoltaic effect, which produces an emf as a result of irradiation between the two layers of a pn-junction.
APPEARS IN
RELATED QUESTIONS
Choose the correct option:
A Series resistance is connected in the Zener diode circuit to ______.
An LED emits visible light when it's ______.
Choose the correct option.
Solar cell operates on the principle of ______.
Answer in brief.
How is a Zener diode different than an ordinary diode?
Answer in brief.
Why should a photodiode be operated in reverse biased mode?
Answer in brief.
State the uses of the solar cell.
Explain how a Zener diode maintains a constant voltage across a load.
Explain the working of a LED.
State any two special-purpose diodes.
State any two advantages and disadvantages of a photodiode.
Define the dark current of the photodiode. What are the advantages and disadvantages of a photodiode?
With forward biased mode, the p-n junction diode ______.
With a neat labelled diagram, explain the working of a photodiode. Calculate the wavelength in angstrom at which the emissive power is maximum for a blackbody heated to 3727 °C.
State the factors which control the wavelength of light emitte d by an LED.
Zener breakdown results from breaking of Si-Si covalent bonds in a silicon junction diode due to ______.
Give the name of the following symbol.
Draw a neat labelled schematic diagram of LED.
Distinguish between light-emitting diode and photo-diode.
What is Avalanche breakdown?
What is a Light Emitting Diode?
