Advertisements
Advertisements
Question
What is a solar cell?
Advertisements
Solution
A solar cell is an electrical device that converts light energy directly into electricity with the help of photovoltaic effect. Solar cells are usually made from semiconductors like silicon and gallium with some impurity added to it. When sunlight is made incident on a solar cell, a potential difference is produced between its surface, due to which a current flows in the circuit connected between the opposite faces of the semiconductor.
APPEARS IN
RELATED QUESTIONS
Can a body possess energy even when it is not in motion ? Explain your answer with an example.
Name the two groups in which various sources of energy are classified. State on what basis are they classified.
Name the energy changes for the following:
bicycle brakes
Name the energy change for the following:
pendulum
What do you understand by the kinetic energy of the body?
What kind of energy is possessed in a situation when?
Water stored in dams.
How much hydro-electric power is generated in India?
State the energy changes which take place when:
Water stored in dams rotates turbine connected to a dynamo.
Show that in case of a body falling freely under gravity, total mechanical energy remains conserved (neglect air resistance).
When and why do clothes smell of naphthalene?
