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Which of the following is true in case of a forward biased p-n junction diode?
a Explanation: The diode is forward biased, positive is connected to p & vice-versa, as such batter provides EMF to drive electrons from n-region to p-region.
a
Explanation: The diode is forward biased, positive is connected to p & vice-versa, as such batter provides EMF to drive electrons from n-region to p-region.
See lessWhich of the following is true in case of an unbiased p-n junction diode?
d Explanation: A potential difference is established across the junctions due to recombination of holes & electrons. This growing filed (barrier potential) stops the further diffusion.
d
Explanation: A potential difference is established across the junctions due to recombination of holes & electrons. This growing filed (barrier potential) stops the further diffusion.
See lessWhen a physical contact between a p-region & n-region is established which of the following is most likely to take place?
c Explanation: When p & n region come together diffusion takes places & a depletion region is established with opposite charges on both the sides of the junction.
c
Explanation: When p & n region come together diffusion takes places & a depletion region is established with opposite charges on both the sides of the junction.
See lessLets assume that the doping density in the p-region is 10-9 cm-3 & in the n-region is 10-17cm-3, as such the p-n junction so formed would be termed as a
b Explanation: Doping density is greater in the p-region compared to the n-region.
b
Explanation: Doping density is greater in the p-region compared to the n-region.
See lessIn the p & n regions of the p-n junction the _________ & the ___________ are the minority charge carriers respectively.
d Explanation: Holes are the minority charge carriers in n-type material & vice-versa.
d
Explanation: Holes are the minority charge carriers in n-type material & vice-versa.
See lessWhich of the below mentioned statements is false regarding a p-n junction diode?
d Explanation: Diode is a two terminal device, anode & cathode are the two terminals.
d
Explanation: Diode is a two terminal device, anode & cathode are the two terminals.
See lessThe n-region has a greater concentration of _________ as compared to the p-region in a P-N junction diode.
b Explanation: Electrons are the majority charge carriers in n-type material.
b
Explanation: Electrons are the majority charge carriers in n-type material.
See lessIn the p & n regions of the p-n junction the _________ & the ___________ are the majority charge carriers respectively.
c Explanation: Holes are the majority charge carriers in p-type material & vice-versa.
c
Explanation: Holes are the majority charge carriers in p-type material & vice-versa.
See lessA p-type semiconductor material is doped with ____________ impurities whereas a n-type semiconductor material is doped with __________ impurities
a Explanation: Donor impurities denote an electron to the n-type material making it a electron majority carrier & vice-versa.
a
Explanation: Donor impurities denote an electron to the n-type material making it a electron majority carrier & vice-versa.
See lessThe p-region has a greater concentration of __________ as compared to the n-region in a P-N junction.
a Explanation: Holes are the majority charge carriers in p-type material.
a
Explanation: Holes are the majority charge carriers in p-type material.
See less