To create a voltaic cell battery using coins and washers, follow these steps:
- Coins: You can use coins of your choice, preferably copper coins like pennies or euro cents, as they have a copper coating.
- Washers: Find washers that have a coating of zinc.
- Cardboard: You'll need cardboard to make the electrolyte.
- Saltwater Solution: Prepare a saltwater solution by mixing two tablespoons of table salt with water.