Electrical Resistance

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Electrical resistance tells us how well or how badly a specific material is able to conduct electric currents. When the electrons flow through the conductor, they bump into the stationary atomic torsos (= Atomrümpfe) of the conductor. The result is that the electrons are hindered in their movement. The electric resistance tells us how strong this hindrance of the electrical current is.
The symbol for the electrical resistance is R. Again, the symbol has a Latin origin. The word „resistere“ means to resist. The unit of the resistance is ohm (Ω). Ohm was the surname of the German physicist Georg Simon Ohm (1789-1854).
If you know the voltage and the amperage of a system, you can calculate the electrical resistance. Our formula, which we always use for that, is called Ohm's law:

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