What will happen to the wire when it cools down again?
Exaplain the process mentioned?
When the wire cools down again, it will return to its original length and shape. This is because as the wire is heated, the atoms within the wire gain energy and vibrate more rapidly, causing the wire to expand. When the wire cools down, the atoms lose energy and return to their original positions, causing the wire to contract back to its original length and shape.
This process is known as thermal expansion and contraction. When a material is heated, its particles gain kinetic energy and move more rapidly, causing them to take up more space and expand. Conversely, when the material is cooled, the particles lose energy and slow down, allowing them to move closer together and contract. This phenomenon occurs in all materials to some extent, but it is particularly noticeable in materials like metal that have high thermal expansion coefficients.