Question

The fact that lightning and spark are essentially the same phenomena, was discovered in:
A) $1882$
B) $1752$
C) $1770$
D) $1802$

Answer 1

Hint: The positive charges (protons) and the negative electric charges (electrons) fuses to form the explosion due to the release of the energy. The lightning is the sudden spark of the light and the spark are based on this principle of the fusion of charges.

Complete answer:
The scientist Benjamin Franklin was the one who found that lightning and the spark are the same phenomenon. First he found the process of the lightning and the movement of the charged particles. Then he found the spark from the clothes also functions in the similar way in the year $1752$ . This findings was made by him at a time when he was flying a kite in the time of thunder and lightning.
In the lightning process, when the positive charged cloud and the negative charged cloud meets each other, then it produces. In the same way, the spark is produced due to the accumulation of the electrons in the air and the positive charge in the materials. These electrons in the air move to the surface of the material, which causes the heating of the air by glowing. This is the transmission between the conductive and the nonconductive state.

Thus the option (B) is correct.

Note: In the lightning process during the rain, it takes place between the clouds whereas in spark it takes place between the surface of material (example: clothes) and the surrounding air. Both are the same but lightning takes place on a massive scale to that of the spark.