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Science Coursework Fruit and Vegetable Batteries Investigation 1: Aim: To find out which combination of metals provided the highest voltage, when stuck into a potato. The metals I used were; Copper, Iron, Zinc and Magnesium. What I found: I found that when Magnesium and Copper were put together, they gave off the highest voltage. Table of Results: Combination of metals Voltage (V) Copper & Zinc 0.75 Copper & magnesium 1.37 Copper & Iron 0.49 Zinc & Magnesium 0.67 Zinc& Iron 0.31 Graph of Results: Investigation 2: Aim: To use the metals that gave off the highest voltage from investigation 1, and see if they can give off voltage whilst running through different types of fruit. What I found: I found that the fruit that gave off the highest voltage was an orange,- and highly acidic, which led me onto investigation 3, and the question- do acidic fruits give off a higher voltage? Table of Results: Fruit / Vegetable Voltage (V) Banana 1.36 Orange 1.7 Kiwi 1.67 Apple 1.57 Lemon (Old) 1.63 Graph of Results: Investigation 3: Aim: To find out what happens to the voltage of...

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