semiconductor-electronics--materials-devices-and-simple-circuits Question 23
Question: Q. 2. (i) In the following diagram, which bulb out of
(ii) Draw a diagram of an illuminated
(iii) Explain briefly the three processes due to which generation of emf takes place in a solar cell.
U [O.D. II 2017]
Show Answer
Solution:
Ans. (i) Identification of the bulb and reason
(ii) Diagram of solar cell
(iii) Names of the processes
(i) Bulb
Diode
(ii) Diagram :
(iii) Generation : Incident light generates electronhole pairs.
Separation : Electric field of the depletion layer separates the electrons and holes.
Collection : Electrons and holes are collected at the
[CBSE Marking Scheme, 2017]
Commonly Made Error
- Some common errors made by students are :
(i) A.C. input voltages at A & B are not shown.
(ii) Complete circuit was not drawn.
(iii) Resistor in o/p circuit
(iv) The circuit was not labelled.
