If the length of a wire is reduced to half, then it can hold the
Correct answer: C. Double load
- A. Half load
- B. Same load
- C. Double load
- D. One fourth
Explanation
The load a wire can support is directly related to its cross-sectional area. When the length of a wire is reduced by half, and assuming constant volume, its cross-sectional area doubles. This is because the volume of the wire (which remains constant) is equal to the cross-sectional area multiplied by its length. Since the cross-sectional area is inversely proportional to the length when volume is constant, halving the length doubles the cross-sectional area, allowing the wire to hold double the load. Option A is incorrect because the wire's increased cross-sectional area allows it to hold more than half the load. Option B is incorrect because the wire can actually hold more than the same load due to the increased cross-sectional area. Option D is incorrect as the load capacity increases rather than decreases to one-fourth.
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