IGCSE A Level Physics MCQs - Chapter 12

Electronics Multiple Choice Questions PDF Download - 1

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Electronics Questions & Answers PDF Download: MCQ Quiz 1

MCQ 1: LED starts to conduct when voltage is about

A) 1 V

B) 4 V

C) 3 V

D) 2 V

MCQ 2: For non-inverting amplifier the input and output is

A) out of phase

B) in phase

C) have phase difference of 180°

D) have phase difference of 90°

MCQ 3: A sensing device is also called

A) transistor

B) thermistor

C) sensor

D) transducer

MCQ 4: Op-amp can provide maximum output current of

A) 25 mA

B) 30 mA

C) 35 mA

D) 40 mA

MCQ 5: Output resistance of an actual op-amp is

A) 45 Ω

B) 46 Ω

C) 70 Ω

D) 75 Ω

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