IGCSE A Level Physics Practice Tests
IGCSE A Level Physics Online Tests
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The MCQ: LED starts to conduct when voltage is about; "Output Devices" App Download (Free) with answers 1 v, 4 v, 3 v and 2 v to learn IGCSE certificate courses. Study output devices quiz questions, download Google eBook (Free Sample) for online college bachelor degree.
MCQ 1: LED starts to conduct when voltage is about
MCQ 2: Op-amp can provide maximum output current of
MCQ 3: A device used to avoid the relay destroying the op-amp is
MCQ 4: To limit current in LED, resistor should be connected in
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
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