TPC Basic Electricity and Electronics Practice Test

The path that provides less overall resistance is the one with the highest material conductivity. Conductivity refers to the ability of a material to allow the flow of electric current. Materials with higher conductivity, such as copper and aluminum, have fewer obstacles for the flow of electrons, resulting in lower resistance along that path. Therefore, a conductive path through a material with high conductivity will facilitate a greater flow of electrical current with less energy loss due to resistance.

In contrast, a longer path generally increases resistance because the longer the distance the electrons must travel, the more collisions they encounter with atoms in the material, which impedes their flow. The path that loops back to the source does not inherently reduce resistance; it may even introduce additional complexity in the circuit that could lead to increased resistance. Lastly, a path with more components in series adds to the total resistance because the resistances of individual components accumulate, leading to a higher overall resistance, contrary to the concept of minimizing resistance. Thus, the relationship between conductivity and resistance highlights why the path with the highest material conductivity is the most favorable for minimizing resistance in a circuit.