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V-I Characteristics for a P-N Junction Diode

In each of th...

Question

In each of the following circuit diagrams, identify which diode(diodes) is(are) forward biased.

Only

D_{2}

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Only

D_{1}

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Both

D_{1}

and

D_{2}

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Neither

D_{1}

nor

D_{2}

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Solution

The correct option is A Only $D_{2}$
The potential at the extreme right s lower than that at the extreme left. So, the current flows from left to right.
Now, for $D_{1}$ ,the current enters the p-side and leaves from N-side, while, leaves from the p-side. Thus $D_{2}$ is forward biased while $D_{1}$ is reverse biased

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