NEETPhysicsSemiconductor ElectronicsMCQ+4 / −1
In an unbiased p-n junction, holes diffuse from the p-region to n-region because of
- AThe attraction of free electrons of n-region.
- BThe higher hole concentration in p-region than that in n-region.
- CThe higher concentration of electrons in the n-region than that in the p-region.
- DThe potential difference across the p-n junction.
View written solutionFree
Correct answer: B
The higher hole concentration is in p-region than that in n-region.
More from Semiconductor Electronics
- One way in which the operation of a n-p-n transistor differs from that of a p-n-p2013 · MCQ
- The output (X) of the logic circuit shown ion figure will be Includes diagram2013 · MCQ
- To get an output Y= 1 in given circuit which of the following input will be correct ? Includes diagram2012 · MCQ
- Two ideal diodes are connected to a battery as shown in the circuit. The current supplied by the battery is Includes diagram2012 · MCQ
- C and Si both have same lattice structure; having 4 bonding electrons in each. However, C is insulator where as Si is intrinsic semiconductor. This is because2012 · MCQ
- The figure shows a logic circuit with two inputs A and B and the output C. The voltage wave forms across A, B and C are as given. The logic circuit gate is Includes diagram2012 · MCQ
- Pure Si at 500 K has equal number of electron (ne) and hole (nh) concentrations of 1.5 1016 m3. Doping by indium increases nh to 4.5 1022 m3. The doped semiconductor is of2011 · MCQ
- In the following figure, the diodes which are forward biased, are Includes diagram2011 · MCQ