Out of the following which one is a forward biased diode? | NEET 2020 (Phase 2)

Q80NEET 2020 · PHASE 2Easy

P-N Junction Diode

Out of the following which one is a forward biased diode?

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Answer: (a)

A diode is forward biased when its anode (p side, triangle) is at a higher potential than its cathode (n side, bar): $V_p > V_n$ .
(a) $V_p = 0\text{ V} > V_n = -3\text{ V}$ : forward.
(b) $-4\text{ V} < -2\text{ V}$ , (c) $2\text{ V} < 5\text{ V}$ , (d) $-2\text{ V} < +2\text{ V}$ : all reverse.
So the answer is (a).

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