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GATE ECE 2002 | Question: 1.5

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In given figure a silicon diode is carrying a constant current of $1 \mathrm{~mA}$. When the temperature of the diode is $20^{\circ} \mathrm{C}, \mathrm{V}_{\mathrm{D}}$ is found to be $700 \; \mathrm{mV}$. If the temperature rises to $40^{\circ} \mathrm{C}, \mathrm{V}_{\mathrm{D}}$ becomes approximately equal to

  1. $740 \; \mathrm{mV}$
  2. $660 \; \mathrm{mV}$
  3. $680 \; \mathrm{mV}$
  4. $700 \; \mathrm{mV}$

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