What sheets did Volta use in his demonstration?

What sheets did Volta use in his demonstration?

• A. copper and iron sheets
• B. aluminum and magnesium sheets
• C. silver and zinc sheets
• D. gold and copper sheets

Answer: (C)

Volta’s demonstration relies on creating a simple galvanic cell by pairing two different metals and an electrolyte. He used sheets of copper and zinc, stacked with a layer of electrolyte between them (traditionally brine-soaked cloth or cardboard). This arrangement sets up a flow of electrons because the two metals have different tendencies to lose or gain electrons. Zinc tends to oxidize (lose electrons) and copper serves as the compatible electrode for reduction. The electrolyte between the sheets allows ions to move, completing the circuit when the stack is connected. Using copper and zinc was practical and produced a clear voltage, which is why this pair is associated with Volta’s pile. Other metal pairings, such as silver with zinc, would not have produced the same effective voltage or were less practical for his demonstrations.

Volta’s demonstration relies on creating a simple galvanic cell by pairing two different metals and an electrolyte. He used sheets of copper and zinc, stacked with a layer of electrolyte between them (traditionally brine-soaked cloth or cardboard). This arrangement sets up a flow of electrons because the two metals have different tendencies to lose or gain electrons. Zinc tends to oxidize (lose electrons) and copper serves as the compatible electrode for reduction. The electrolyte between the sheets allows ions to move, completing the circuit when the stack is connected.

Using copper and zinc was practical and produced a clear voltage, which is why this pair is associated with Volta’s pile. Other metal pairings, such as silver with zinc, would not have produced the same effective voltage or were less practical for his demonstrations.