Moderate

The diagram above shows a PN junction diode connected as depicted. What will be the behavior of the diode?

Correct answer: B. Current flows because diode is forward-biased

  • A. No current flows because diode is reverse-biased
  • B. Current flows because diode is forward-biased
  • C. Breakdown occurs
  • D. Depletion region increases significantly

Explanation

The P-side is connected to the positive terminal and the N-side to the negative terminal → forward bias. Forward bias reduces the depletion width and allows current to flow.

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A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.

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