What is the small green card used with a 9V battery
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What is the small green card used with a 9V battery

[From: ] [author: ] [Date: 12-05-21] [Hit: ]
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 (:-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.......
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…

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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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