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Question : 7
Total: 9
(a) In the following diagram, which bulb out of B 1 and B 2 will glow and why?
(b) Draw a diagram of an illuminatedp -n junction solar cell.
(c) Explain briefly the three processes due to which generation of emf takes place in a solar cell.
(b) Draw a diagram of an illuminated
(c) Explain briefly the three processes due to which generation of emf takes place in a solar cell.
Solution:
(a) Identification of the bulb and reason
(b) Diagram of solar cell
(c) Names of the processes
(a) BulbB 1 glows
DiodeD 1 is forward biased.
(b) Diagram
(c) Generation: Incident light generates electron-hole pairs.
Separation: Electric field of the depletion layer separates the electrons and holes.
Collection: Electrons and holes are collected at then and p side contacts.
(b) Diagram of solar cell
(c) Names of the processes
(a) Bulb
Diode
(b) Diagram
(c) Generation: Incident light generates electron-hole pairs.
Separation: Electric field of the depletion layer separates the electrons and holes.
Collection: Electrons and holes are collected at the
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