There are two LED's that require no more than 5V and 2V to turn on respectively, they are both being powered by a 9V battery. The objective is to find the amount of resistance for each LED to get the right amount of power to them so that they are not burnt out by getting too much power. The system is set up in series.
The system setup:
We had calculated the resistance the LED's would have on the system and took that in account when we chose the resistors that we needed to keep the LED's from burning out. We then calculated the amount of volts, power, and amps that would be going to each LED.
We then recorded the data needed from the experiment, using our millimeters.
We proceeded to do the calculations for the lab.
In conclusion, once we did our calculations after the experiment was completed we realized that there was a lot of error because both the LED's were not rated correctly. This also caused our efficiency to be very low.
We determined for the efficiency to be at its highest the input voltage source should be 5V so that we would not need any extra resistance for the 5V LED.
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