Question

How does a resistor convert electricity into heat?

Answer 1

see below

Explanation:

A resistor convert electricity into heat thanks to Joule effect. The electrons that carry the current find difficult to pass through some materials that don't let pass electricity well( as iron and its allois). striking their atoms they heat themselves. The electrical energy is `E = P t = R i^2 t` where R is the resistance; i is the intensity of electric current, t is the passaging time. This energy become heat :`E = m cp (Tf-Ti)` where m is the mass of the heated object, cp is its specific heat, (T2-T1) is the difference between the final and the initial temperature