Statement I: When a Si sample is doped with Boron, it becomes 
-type and when doped by Arsenic it becomes 
-type semiconductor such that 
-type has excess holes and 
-type has excess electrons.
Statement II : When such 
-type and 
-type semiconductors, are fused to make a junction, a current will automatically flow which can be detected with an externally connected ammeter.
In the light of above statements, choose the most appropriate answer from the options given below.
Text Solution
Verified by ExpertsA
Statement I is correct but statement II is incorrect.
When 
junction is formed, an electric field is generated from 
side to 
side due to which barrier potential arises and majority charge carrier cannot flow through the junction due to barrier potential so current is zero unless we apply forward bias voltage.
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