When two conductors with the same length and different cross-sectional area are connected in series, they compare the current and voltage. The thin one is ab, and the thick one is BC

The series current is equal
U=IR
Thin resistance, high voltage at both ends
Uab>Ubc

How do the factors affecting voltage and current, material, length, cross-sectional area and temperature affect it?

The relationship between voltage and current, in line with Ohm's law, that is, current = voltage / resistance. Many factors affect the resistance, 1) material determines the conductivity, in terms of conductivity, silver is better than copper, copper is better than iron

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