Recent content by theonlysnowman

ok i have looked at what you've said. so if i had a circuit like the question asked to keep the current the same at all times, so id vary the resistance so that the current is the same for all 3 LEDs, so the energy supplied is the same. id keep the detector (which would detect the no. of...

um i don't really understand what you said... because I am only doing A level physics. i mean like would you like have a cell in series with a led, resistor (to limit the current), an ammeter, and a voltmeter in parallel with the led. the question asked something like, if you have 3 LEDs...

what type of circuit would you draw for this? and how would you actually measure the light intensity of an LED. say you had multiple LEDs and you wanted to compare the light intensity of all of them. how would you do this with with circuit?