Which principle is used in solar cells?
Correct answer: B. Charge
- A. Momentum
- B. Charge
- C. Mass
- D. All of these options are correct
Explanation
Solar cell devices are known to follow the 'photovoltaic effect', which is the conversion of sunlight to direct current. Since the current is involved, the option, closest to the current, is 'Charge'. The principle used in solar cells is the movement of charge, making option B correct. Neither momentum nor mass is directly involved in the operation of solar cells, making options A and C incorrect.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About PN Junction
A PN junction forms when p type and n type semiconductor regions meet, creating a depletion layer and a potential barrier. The topic covers forward and reverse bias, diode current voltage characteristics, breakdown and rectification, while distinguishing an ordinary junction diode from a transistor formed from multiple junctions.
Practise Electronics
660 free Electronics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More PN Junction questions
A logic gate has four inputs. Its possible input combinations will be:
In the given NPN transistor diagram, the minority carriers are
When a p-n junction is reverse biased, then the depletion region of the junction is
In which of the following, output is similar to NAND gate if input A=0 and input B = 1.
In LED when an electron combines with a _ during forward bias conduction, a photon of visible light is emitted.
Practically _ current flows in a reverse p-n junction.