The fundamental laws of electric resistance ($V = IR$) were discovered by which physicist? MCQ with Answer and Explanation

The fundamental laws of electric resistance ($V = IR$) were discovered by which physicist?

A. Alessandro Volta

B. Georg Simon Ohm

C. James Watt

D. André-Marie Ampère

Answer: Option B

Georg Simon Ohm discovered the direct proportionality between voltage and current across a conductor, known as Ohm's Law.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1 Report Error

The first accurate measurement of the speed of light using astronomical observations of Jupiter's moons was performed by whom?

A. Albert Michelson

B. Léon Foucault

C. Armand Fizeau

D. Ole Rømer

Correct Answer: Option D

Explanation:
Danish astronomer Ole Rømer made the first quantitative measurement of the speed of light in 1676.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2 Report Error

Who discovered the bacterium Vibrio cholerae, the causative agent of cholera?

A. Joseph Lister

B. Louis Pasteur

C. Alexander Fleming

D. Robert Koch

Correct Answer: Option D

Explanation:
Robert Koch isolated Vibrio cholerae in 1883 during an epidemic outbreak investigation in Egypt and India.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3 Report Error

Who discovered that light waves travel as transverse vibrations, contradicting the longitudinal wave model?

A. Christiaan Huygens

B. James Clerk Maxwell

C. Isaac Newton

D. Augustin-Jean Fresnel and Thomas Young

Correct Answer: Option D

Explanation:
Fresnel and Young demonstrated through polarization experiments that light waves propagate perpendicular to the direction of travel.

This question belongs to: Static General Knowledge Inventions and Discoveries