Which one of the following is reverse-biased?

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(C) $PN$ junction diode is reverse-biased when the potential at the $P$-side $(V_P)$ is lower than the potential at the $N$-side $(V_N)$,i.e.,$V_P < V

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(C) $PN$ junction diode is reverse-biased when the potential at the $P$-side $(V_P)$ is lower than the potential at the $N$-side $(V_N)$,i.e.,$V_P Let us analyze each option:$(A)$ $V_P = 15 \ V$,$V_N = 10 \ V$. Since $V_P > V_N$,it is forward-biased.$(B)$ $V_P = -5 \ V$,$V_N = -10 \ V$. Since $V_P > V_N$ (as $-5 > -10$),it is forward-biased.$(C)$ $V_P = -10 \ V$,$V_N = 0 \ V$ (ground). Since $V_P $(D)$ $V_P = 10 \ V$,$V_N = -5 \ V$. Since $V_P > V_N$,it is forward-biased.Therefore,the correct option is $(C)$.

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