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Which of the following determines the brightness of LEDs?(a) current(b) voltage(c) resistance(d) conductanceI got this question in an online quiz.I'm obligated to ask this question of Power Controls in section Interfacing to the Analog World of Embedded Systems

Answer»

The correct ANSWER is (a) current

For explanation: The current drive determines the BRIGHTNESS of the LEDs and it is usually associated with a current LIMITING RESISTOR in series with the LED to prevent the overheating.



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