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A resistor obeys Ohm's law (\$\small V=I\cdot R\$); the current through it is equal to the voltage across it divided by the resistance (equivalently \$I=\frac{V}{R}\$).
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Heat Conduction from ceramic resistor to iron rod
I'm trying to conduct a thermal conductivity test.
I've set up an experiment where I take a rod of a given material (steel, for example), measure its cross section, length, extreme temperatures and he …