Electrician's Licensing Practice Exam

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Prepare for the Electrician's Licensing Test with our comprehensive quiz. Utilize flashcards and multiple choice questions, all with helpful hints and explanations. Equip yourself for success!

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Does resistance to flow increase as the diameter of the wire increases?

True
False
Only for certain materials
Only for very thin wires

The correct answer is: False

Resistance to the flow of electric current is inversely related to the diameter of the wire. As the diameter of the wire increases, the cross-sectional area also increases, which allows more paths for the current to travel through. This reduction in resistance is due to the fact that a thicker wire can accommodate a greater number of charge carriers moving simultaneously, thereby decreasing the overall resistance. In contrast, a wire with a smaller diameter has a smaller cross-sectional area and can restrict the flow of electric current, leading to higher resistance. Therefore, the notion that resistance increases with the diameter of the wire is fundamentally flawed, as it overlooks the basic principles of electrical conductivity and resistance governed by materials' properties and geometric factors. So, the correct assessment is that resistance does not increase with an increase in wire diameter.