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Question

How can you identify the positive terminal of a cell or a battery concealed in a box with the help of a potato?  [3 MARKS]


Solution

Description: 3 Marks

Cut a potato into two halves and insert the copper wires of a tester connected to 2 ends of the battery. After some time,  a greenish blue spot develops around the wire connected to the positive terminal of the battery, . In this way we can identify the positive terminal of the battery.

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