ETC EngineeringMCQs
Home › Electronic Devices & Circuits › A silicon diode with a 0.7 V constant-drop model is connected in series with a 1 kOhm resistor to a 5 V DC source in forward bias. The diode current is approximately?
MCQ Practice Question
Electronic Devices & CircuitsPN Junction Diode

A silicon diode with a 0.7 V constant-drop model is connected in series with a 1 kOhm resistor to a 5 V DC source in forward bias. The diode current is approximately?

  • A0.7 mA
  • B4.3 mA
  • C5 mA
  • D5.7 mA
Report an error
Correct Answer: B. 4.3 mA
Explanation: The resistor sees approximately 5 - 0.7 = 4.3 V, so I = 4.3 V / 1 kOhm = 4.3 mA.
Reference: Standard diode circuit calculation
Continue practicing: Electronic Devices & Circuits MCQs or browse all MCQs.