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Electricity Science Fair Project

Investigating Voltage in Electrochemical Cells

Investigating Voltage in Electrochemical Cells | Science Fair Projects | STEM Projects
We'll investigate how different materials used as electrodes and electrolytes affect the voltage produced in electrochemical cells. We'll use a voltmeter to measure the voltage and record our results.


The hypothesis is that zinc and copper wet cell batteries produce the highest voltage.

Method & Materials

You will rub the copper, zinc and lead sheets against sandpaper to remove any deposits, pour electrolyte solutions into beakers, connect the electrodes to the voltmeter, and record the voltage readings.
You will need zinc sheet, copper sheet, lead sheet, zinc nitrate solution, copper nitrate solution, lead nitrate solution, porous cup, 2 beakers, 1 voltmeter, gloves, plastic safety goggles, a piece of sandpaper.


The results showed that the lead-copper cell produced the greatest amount of electricity. This experiment provides information about which type of material is most suitable as to be used as electrodes in batteries.

Why do this project?

This science project is interesting because it explores the effect of different materials on the voltage produced in electrochemical cells.

Also Consider

Variations to consider include: what would happen if more electrolyte solution was added, would increasing the temperature of the solution affect the voltage produced, and what other materials can you use for the electrolytes and electrodes?

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

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