Questions
A potential barrier V volts exists across a P-N junction. The thickness of the depletion region is ‘d’. An electron with velocity ‘v’ approaches P-N junction from N-side. The velocity of the electron crossing the junction is
detailed solution
Correct option is B
There exists an electric field from N side to P side. As electron experience a force opposite to the direction of electric field, it's velocity decreases, as it moves from N to P side; from conservation of energy12mv2-eV=12mv'2v'2=v2-2eVmv'=v2-2eVmTalk to our academic expert!
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The diode used in the circuit has barrier voltage 0.5 V and maximum power rating is 10 mW. What should be the minimum value of resistance R connected in series with the diode
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