ELI5, what is electrical resistance?
In: Physics
Resistance describes a material’s ability to resist the flow of electrons. Resistance occurs when electrons collide with atoms. The amount of these collisions depends on the material and its temperature, thickness and length.
The collisions manifest themselves as a rising temperature of the conductor and sometimes as light. We often use components called resistors to purposely give the circuit some resistance in order to prevent too much current from reaching vulnerable parts of the circuit or to produce some light and heat. The unit of resistance is ohm (Ω).
[How electricity works](https://joonasjokinen.fi/en/blog/posts/how-does-electricity-work)
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