It wasn't until what century that scientists began to understand electricity's nature and develop ways to harness it?

It wasn't until what century that scientists began to understand electricity's nature and develop ways to harness it?

• A. 17th century
• B. 18th century
• C. 20th century
• D. 19th century

Answer: (D)

Understanding electricity progressed from observing a phenomenon to explaining how it works and how to use it. In the nineteenth century, scientists like Faraday showed that changing magnetic fields produce electric current, laying down the practical mechanism of generation. Maxwell then connected electricity and magnetism in a comprehensive theory, giving a framework that made engineering with electricity possible. This combination of conceptual insight and real-world devices—generators, motors, and electric lighting—marks the period when electricity could be understood and harnessed, making the nineteenth century the pivotal era.

Understanding electricity progressed from observing a phenomenon to explaining how it works and how to use it. In the nineteenth century, scientists like Faraday showed that changing magnetic fields produce electric current, laying down the practical mechanism of generation. Maxwell then connected electricity and magnetism in a comprehensive theory, giving a framework that made engineering with electricity possible. This combination of conceptual insight and real-world devices—generators, motors, and electric lighting—marks the period when electricity could be understood and harnessed, making the nineteenth century the pivotal era.