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Temps restant $0$:$49$:$23$

Question $1$

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Not$$ sur $4$

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For the circuit in the figure, which of the following are correct?

I$)V_O=I_x{R}_B.$

II$)$ For any negative $V_{\text{I}}$ value; $I_x=0.$

III$)$ If $D_1$ is in Zener region; $D_2$ is $ON.$

IV$)$ For any positive $V_1$ value; $D_2$ is $ON$

Veuillez choisir une r$$ponse$.$

a$.$ III and IV

b$.$ II and III

C$.$ II and IV

d$.$ I, II and IV