In the following figure, the diodes which are forward biased, are A. B. C. D.

In the following figure, the diodes which are forward biased, are A. B. C. D.
  1. C only
  2. C and A
  3. B and D
  4. A, B and D

Solution

For forward bias p-type should be higher potential and $n$-type at lower potential. Hence (A) and (C) are in forward bias.

Asked in: NEET 2011 (Mains)

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