Answer:In 1752
Explanation:Benjamin franklin in 1752 to prove that lightning was electrical,he flew a kite during a thundorstorm.He tied a metal key onto the string and as he suspected it would ,electrically from the storms clouds flowed down the string ,which was wet and he received an electrical shock.
Electricity was discovered and understood by many scientists. Benjamin Franklin is given the credit for discovering electricity. In the year 1752, Benjamin Franklin conducted an experiment using a kite and key on a rainy day.
