1.

Which of the following voltages may be considered as a safe and sufficient voltage for the operation of a LED?(a) 0.7 V(b) 5 V(c) 2.7 V(d) -5 VI have been asked this question in a job interview.My question is based upon Types of Diode and their Testing topic in section Diode Circuit of Analog Circuits

Answer»

The correct choice is (c) 2.7 V

Best EXPLANATION: The SAFE and sufficient operating VOLTAGE range for LED is between 1.7 V to 3.3 V. Hence, 2.7 V is the best option.



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