Why do things get hot when electricity is pasted through them?
Electricity is the flow of electrons through a material. But for electrons to pass through a material they have to give up some energy, this is called a material's resistance. The energy that is lost from the flow of electrons, due to a material's resistance, is passed onto the material in the form of heat, which makes the material hotter.
PR
Related Physics GCSE answers
All answers ▸A rock fragment weighing 50N is displaced from the top of a cliff and falls 0.12 km to the ground. Calculate the kinetic energy (in J) of the rock just before it hits the ground. Assume air resistance is negligible.
Kinetic theory describes the movement of particles in three states of matter. If a cube of ice is put in a tin with a tight fitting lid and continuously heated, why does the lid explode off?
Explain how the resistance of a filament lamp changes as the potential difference across it increase
A 2 kW electric fire is switched on for 30 minutes. How many Units of electricity does it use?