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Physics 7 Online
OpenStudy (anonymous):

What is the state of the diodes? see attached

OpenStudy (anonymous):

OpenStudy (kropot72):

Assuming standard silicon diodes are used: When R4 is set to maximum resistance both diodes will conduct a current about 13mA. When R4 is set to minimum resistance the diodes might stop conducting, the reason being that there is not enough forward voltage.

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