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 ▸Resistors of 5 ohms and 10 ohms are connected in series with a battery supplying 3 volts. What is the total resistance ? And calculate the current in the circuit.
The charge that flows through the shower in 300 seconds is 18000C. The electric shower has a power of 13.8 kW. Calculate the resistance of the heating element in the shower.
What can the nucleus emit during radioactive decay?
A mobile phone falls to the floor. The glass screen shatters while the aluminium frame remains intact. Explain why this happens in terms of the properties of glass and aluminium.