As compared to thin wires, thick wires have?
Correct answer: C. Less resistance
- A. More resistance
- B. No resistance
- C. Less resistance
- D. Same resistance
Explanation
R = p L/A Thick wires have less resistance than thin wires because of their greater cross-sectional area. The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area, as described by Ohm's law. Thicker wires have a larger cross-sectional area, which means that they offer less resistance to the flow of electric current compared to thinner wires. This is because the larger cross-sectional area provides more space for the electrons to move, reducing the likelihood of collisions and increasing the flow of current. Therefore, thick wires have less resistance than thin wires and can carry more current without overheating or losing energy due to resistance.
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