Physics-
General
Easy

Question

The junction diode in the following circuit requires a minimum current of 1 mA to be above the knee point (0.7 V) of its I-V characteristic curve. The voltage across the diode is independent of current above the knee point. If VB = 5 V, then the maximum value of R so that the voltage is above the knee point, will be

  1. 4.3 k capital omega    
  2. 860 k capital omega    
  3. 4.3 capital omega    
  4. 860 capital omega    

The correct answer is: 4.3 k capital omega

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