The hypothesis given by Benjamin Franklin while testing the invention of the lightning rod was that there was an electrical current produced from thunder lightning.
Who was Benjamin Franklin?
Benjamin Franklin was a scientist and inventor. He also helped in framing the Declaration of Independence.
Benjamin Franklin experimented with lightning by flying a kite and he observed in the storm clouds that there was a silver lining like iron rods that were capable of attracting electricity from those clouds.
Therefore, while testing the invention of the lightning rod, he found that the lighting was producing electric currents.
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