Output Devices MCQ App | IGCSE A Level Physics MCQ e-Book PDF
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Output Devices Multiple Choice Questions with Answers – PDF Download

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Free "Output Devices MCQ" App Download: LED starts to conduct when voltage is about; MCQ with answers: 1 v, 4 v, 3 v, and 2 v. Practice Output Devices Quiz Questions, download Google e-Book (Free Chapter) to advance virtual education.

Output Devices MCQs PDF Download – Prep Test

MCQ 1: LED starts to conduct when voltage is about:

  1. 1 V
  2. 4 V
  3. 3 V
  4. 2 V

MCQ 2: Op-amp can provide maximum output current of:

  1. 25 mA
  2. 30 mA
  3. 35 mA
  4. 40 mA

MCQ 3: A device used to avoid the relay destroying the op-amp is:

  1. diode
  2. LED
  3. reverse bias diode
  4. forward biased diode

MCQ 4: To limit current in LED, resistor should be connected in:

  1. parallel
  2. series
  3. evacuated flask
  4. ionized tube

MCQ 5: If current of 20 mA is passing through op-amp and voltage drop across series resistor is 10 V then value of resistance is:

  1. 500 Ω
  2. 400 Ω
  3. 300 Ω
  4. 200 Ω

IGCSE A Level Physics MCQs App & e-Book – Output Devices Practice Tests

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