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(D) In a $PN$ junction diode,the diode is forward biased if the potential at the anode (p-side) is higher than the potential at the cathode (n-side).

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Diagram $(A)$ is reverse biased and diagram $(B)$ is forward biased.

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(D) In a $PN$ junction diode,the diode is forward biased if the potential at the anode (p-side) is higher than the potential at the cathode (n-side). It is reverse biased if the potential at the anode is lower than the potential at the cathode.In diagram $(A)$,the anode is at $-4 \ V$ and the cathode is at $-3 \ V$. Since $-4 \ V In diagram $(B)$,assuming the standard configuration where the anode is at $-2 \ V$ and the cathode is at $-4 \ V$ (based on typical textbook problems of this type),the anode is at a higher potential than the cathode,so diagram $(B)$ is forward biased.Therefore,diagram $(A)$ is reverse biased and diagram $(B)$ is forward biased.

The figure shows two diagrams in which a diode and a resistance are connected. Out of the following statements,which one is $TRUE$?

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