Hello , i have one exercise for my school and the question is *Which LED will not turn on and why?* The DC source is 7V and the resistor is 1kOhm with 1% tolerance. I must find also the Vf (v0lt) for LED_blue,LED_green,LED_ir,LED_orange,LED_red and LED_yellow with multimeter. Althought blue, orange and green do not turn on. The others do.
I am surprised that with a supply of 7 volts there are some LEDs which do not illuminate.
With a 1k current limiting resistor, they may only be a dim glow, but I would expect them to do something.
/CYNICAL_MODE: ON
But then this is just a computer game and not real components.
/CYNICAL_MODE: OFF