Okay, so I have to do a Rube Goldberg project for my chemistry class. The goal is to light up an LED. I was watching videos online to get ideas, and I found one that used something like this: Okay, the 9V battery was attached on top of a green card that had a red and green bulb on it. I need to know the name of it. Please and thank you (:
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The "green card" is just a circuit board. It would be a lot easier if you just bought a simple switch, an LED and a simple 9 V battery and connected them in series. Have a ball or marble hit the switch, the LED will then light up.
Materials:
Simple circuit switch
2 wires
9 V battery
Circuit Diagram:
http://www.google.ca/imgres?q=simple+cir…
Materials:
Simple circuit switch
2 wires
9 V battery
Circuit Diagram:
http://www.google.ca/imgres?q=simple+cir…
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Since aluminum is a metal, it is conductive regarding both heat and electricity. Simply roll aluminum foil into strips and use those as your wires.
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Tin foil is now called aluminum foil***
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Simply hooking an LED in series with a 9V battery is going to be a bad idea. Your LED is going to draw too much current and burn out in about 1 second. You should put a resistor in series with the switch and LED to limit the current. You are likely going to use a 50 - 100 Ohm resistor.
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You can find the resistance you should use by simply using Ohm's law r = v/i where v = 9 and i is equal to the current you desire in Amps. (Your LED is likely to be rated at 10-20 milliamps which is .1 to .2 Amps) This should allow your LED to stay lit long enough to get your grade.
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