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CBSE Class 12-science Answered

1. Can u explain how barrier potential is opposite to the applied voltage in forward bias an why applied voltage decreases in depletion region.
Asked by Prakash | 19 Oct, 2017, 08:33: PM
answered-by-expert Expert Answer
Barrier potential is opposite to the applied voltage because the majority carriers
 are pushed to the opposite sides at PN- junction.
However, the direction of the potential is taken from positive to negative.
At the boundary of the barrier, ions are formed negative on p-side and
positive on n-side which is in opposite direction to the applied voltage.
Applied voltages decrease the depletion region
width by making majority carrier to overcome the barrier.
Answered by Gajendra | 04 Dec, 2017, 01:24: PM
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