IGCSE A Level Physics Notes App | Electronics Notes e-Book PDF | 4
IGCSE A Level Physics MCQs (A Level) From Textbook

IGCSE A Level Physics Exam MCQs – Practice Test 4 (Chapter 12)

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Electronics Test Questions and Answers PDF Download: MCQ 4

MCQ 16: A component whose property changes when there is a change in any physical quantity of a device is:

  1. processor
  2. sensor
  3. output device
  4. portable device

MCQ 17: Benefits of negative feedback include:

  1. less distortion
  2. increased bandwidth
  3. low output resistance
  4. all of above

MCQ 18: When temperature rises, resistance of negative temperature coefficient thermistor:

  1. increases
  2. decreases
  3. zero
  4. infinity

MCQ 19: 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

MCQ 20: Graph of resistance of thermistor to temperature is:

  1. exponential decrease
  2. linear decrease
  3. exponential increase
  4. linear increase

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