Two identical P-N junction may be connected in series with a battery in three ways (figure). The potential drops across the two P-N junction are equal in-
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Circuit 1 and 2 Circuit 2 and 3 Circuit 3 and 1 Circuit 1 only |
Circuit 2 and 3 |
In case (1) first PN junction is forward bias while second one is in revere bias. |