Moderate

In Fig., the current through the resistor is practically:

Correct answer: D. Zero

  • A. 5A
  • B. 2A
  • C. 1A
  • D. Zero

Explanation

In the circuit the diode is reverse-biased. So, no current flows through the circuit. When a diode is reverse-biased in a circuit, the current through the diode is typically very low, and it is often considered to be ideally zero. In a reverse-biased diode, the voltage applied across the diode is in the opposite direction to the diode's natural voltage drop when forward-biased. This creates a barrier that prevents the majority charge carriers (electrons in an N-type region and holes in a P-type region) from easily crossing the junction. state, and the diode essentially acts as an open circuit. There may be a small amount of leakage current, often in the nanoampere or picoampere range, due to some minority carriers and other factors, but this current is typically negligible for most practical purposes. Therefore, in a typical scenario with a reverse-biased diode, the current through the diode is practically considered to be close to zero.

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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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