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Investigation to see how the voltage changes when we change the metals used in a cell Method During this investigation I performed two different experiments. Both experiments were to see how the voltage changed when using two different metals as electrolytes in a battery. When using sulphuric acid as the electrolyte I set up the experiment as shown in the diagram. The other experiment used a grapefruit (therefore citric acid) as the electrolyte. We set it up in the same way as we set up the experiment when using sulphuric acid, except we inserted the pieces of metal (the electrodes) into the grapefruit. The wires were attached to the pieces of metal using crocodile clips. We then held the metals in the electrolyte until the voltage reading on the voltmeter remained steady. I repeated the results once when using sulphuric acid, but did not have enough time to repeat the results...

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