Multiple choice

In which year was James Prescott Joule born?

  1. 1815

  2. 1818

  3. 1817

  4. 1814

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

James Prescott Joule, the English physicist, was born on December 24, 1818. He established the relationship between heat and mechanical work, leading to the law of conservation of energy. The unit of energy 'joule' is named after him. The other years (1815, 1817, 1814) are incorrect.