Who discovered that electrical currents travel along the exterior surface of a conductor rather than uniformly through its core? MCQ with Answer and Explanation

Who discovered that electrical currents travel along the exterior surface of a conductor rather than uniformly through its core?

A. Heinrich Hertz

B. James Clerk Maxwell

C. Michael Faraday

D. Nikola Tesla

Answer: Option C

Michael Faraday discovered the skin effect and structural shielding principles, leading to the creation of the Faraday Cage.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1 Report Error

Who is the inventor of the Richter Scale used to measure the magnitude of earthquakes?

A. James Hutton

B. Alfred Wegener

C. Giuseppe Mercalli

D. Charles Richter

Correct Answer: Option D

Explanation:
Charles F. Richter developed the Richter magnitude scale in 1935 in partnership with Beno Gutenberg.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2 Report Error

Who discovered that the chemical element Chromium is isolated from Siberian red lead ore matrices?

A. Carl Wilhelm Scheele

B. Louis-Nicolas Vauquelin

C. Martin Heinrich Klaproth

D. Antoine Lavoisier

Correct Answer: Option B

Explanation:
Vauquelin isolated chromium in 1797 by treating crocoite mineral crystals with hydrochloric acid compounds.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3 Report Error

The periodic table of elements was first proposed in its widely recognized chronological form by whom?

A. John Newlands

B. Henry Moseley

C. Dmitri Mendeleev

D. Antoine Lavoisier

Correct Answer: Option C

Explanation:
Dmitri Mendeleev published the first widely recognized periodic table in 1869, arranging elements by atomic mass.

This question belongs to: Static General Knowledge Inventions and Discoveries