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See Also HERE...

 
   

Lemon Electricity!

 
What you need?
Lemoncitrus fruit (lemons or limes work best)

1 copper screw about 5 cm long

1 zinc screw about 5 cm long

1 holiday light with 5 cm leads

How to do the experiment?
Lemon batteryYou remember that a battery is nothing more that a device that stores metals and chemicals. And all that citrus contains acids.

1. Roll the fruit under the palm of your hand to soften but be careful you don't break the skin. Work it gently on a piece of scrap paper or a paper towel.

2. Insert the screws into the fruit about 5 cm apart. Don't allow the screws to go through the bottom skin of the fruit.

3. Carefully remove about 1 cm of the insulation from the leads on the holiday light. Do not cut into the wire beneath the insulation.

4. Twist one end of the wire around one screw and the other end around the other screw. Good... you have light!

What Else?
 
Investigate the probability of using other fruits and vegetables to make electricity. Measure the pH of each "battery" and see if there is a relationship between the pH of the juice and the amount of light that is produced. If you have a multimeter, you can measure the voltage and current produced.
 
 
Batteries are an important part of today's highly charged electrical society. They are used to start cars, power alarm systems, and run important stuff like radios and CD players.

From what materials was the first "voltaic" cell constructed?

What materials are used in today's batteries?

What materials may be used in the batteries of the future?

 

 

 

 

   

   
 
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