The cause of potential barrier in a pn-junction diode is

1.	The cause of potential barrier in a pn-junction diode is
A.	Depletion of positive charges near the junction
B.	Concentration of positive charges near the junction
C.	Depletion of negative charges near the junction
D.	Concentration of positive and negative charges near the junction
Answer» E.

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The cause of potential barrier in a pn-junction diode is

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