Benjamin Franklin is associated with electricity experiments and the invention of which device?

Benjamin Franklin is associated with electricity experiments and the invention of which device?

• A. Lightning rod
• B. Electricity transformer
• C. Battery
• D. Electroscope

Answer: (A)

The main idea here is understanding Franklin’s practical contribution to electricity—the lightning rod. Franklin reasoned that lightning is a form of electrical discharge from the atmosphere and that a pointed conductor connected to the ground could attract this discharge and channel it safely away from a structure. A lightning rod provides a direct, low-resistance path for the lightning to reach the earth, shielding the building from damage and fires. The other devices aren’t tied to his experiments: a battery was developed by Volta, a transformer is a later invention for changing voltage in power systems, and an electroscope is a simple instrument for detecting charge, not something Franklin is credited with inventing. The lightning rod is the device most closely associated with his electricity work.

The main idea here is understanding Franklin’s practical contribution to electricity—the lightning rod. Franklin reasoned that lightning is a form of electrical discharge from the atmosphere and that a pointed conductor connected to the ground could attract this discharge and channel it safely away from a structure. A lightning rod provides a direct, low-resistance path for the lightning to reach the earth, shielding the building from damage and fires. The other devices aren’t tied to his experiments: a battery was developed by Volta, a transformer is a later invention for changing voltage in power systems, and an electroscope is a simple instrument for detecting charge, not something Franklin is credited with inventing. The lightning rod is the device most closely associated with his electricity work.