UPTET Paper 2 Math and Science Model Test 4

Concept:The heating effect of electric current was first discovered by James Prescott Joule. He showed that electrical energy converts into heat energy.Explanation:James P. Joule was an English physicist. In 1840, he found that a current-carrying wire produces heat. The heat produced per second depends on the wire's resistance and the square of the current. This is known as Joule's law. The formula is $P = I^{2}R$, where $P$ is power in watts, $I$ is current in amperes, and $R$ is resistance in ohms. This discovery proved that electrical, mechanical, and heat energy are interchangeable. Other scientists listed did not work on this effect. Galileo studied motion. J. J. Thomson discovered the electron. Isaac Newton studied gravity and motion.