Output Devices MCQs Quiz Online PDF Download

Practice output devices MCQs, A level physics MCQ online for test prep. Electronics quiz has multiple choice questions (MCQ), output devices quiz questions and answers as led starts to conduct when voltage is about, answer key help with choices as 1 v , 4 v, 3 v and 2 v problem solving for viva, competitive exam preparation, interview questions. Free study guide is to learn output devices quiz online with MCQs to practice test questions with answers.

MCQs on Output Devices Quiz PDF Download

MCQ. LED starts to conduct when voltage is about

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


MCQ. Op-amp can provide maximum output current of

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


MCQ. A device used to avoid relay destroying op-amp is

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


MCQ. To limit current in LED, resistor should be connected in

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


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