Question: A <em>p–n</em> junction in series with a 100 ohms resistor is forward-biased so that a current of 100 mA flows. If the voltage across this combination is instantaneously reversed to 10 volt at <em>t</em> = 0 the reverse current that flows through the diode at <em>t</em> = 0 is approximately given by:
Answer:
MCQ: A <em>p–n</em> junction in series with a 100 ohms resistor is forward-biased so that a current of 100 mA flows. If the voltage across this combination is instantaneously reversed to 10 volt at <em>t</em> = 0 the reverse current that flows through the diode at <em>t</em> = 0 is approximately given by:
Correct Answer:
A. 20 mA
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Related Questions
- 1. The width of the depletion region is:
- 2. The Fermi energy in <em>p–n</em> junction at thermal equilibrium is:
- 3. The depletion capacitance, <em>C<sub>j</sub></em> of an abrupt <em>p–n</em> junction with constant doping on either side varies with reverse bias, <em>V<sub>R</sub></em>, as:
- 4. Gold is often diffused into silicon <em>p–n</em> junction devices to:
- 5. In a forward-biased photo diode with increase in incident light intensity, the diode current:
- 6. The current through a <em>p</em>–<em>n</em> junction diode with V volts applied to the <em>p</em>-region relative to the <em>n</em>-region (where <em>I<sub>O</sub></em> is the reverse saturation current of the diode, <em>η</em> the ideality factor, <em>K</em> the Boltzmann constant, <em>T</em> the absolute temperature and <em>e</em> the magnitude of charge on an electron) is:
- 7. The varactor diode is:
- 8. The electric field in abrupt <em>p–n</em> junction is:
- 9. In a linearly-graded <em>p–n</em> junction the doping concentration:
- 10. A <em>p–n</em> junction, which is produced by recrystallisation on a base crystal, from a liquid phase of one or more components and the semiconductor is called:
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