# The length of a wire is L meter, the wire is stretched to make its length 2L, now the resistance of the wire will be

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The correct answer is: Four times of the previous (option B). The resistance of a wire is directly proportional to its length. Doubling the length of the wire from L to 2L will result in four times the resistance of the original wire. This relationship arises because resistance is a measure of how much a material opposes the flow of electric current, and longer wires offer more opposition to current flow compared to shorter wires of the same material and cross-sectional area. Therefore, stretching the wire to twice its original length increases its resistance by a factor of four. This principle is crucial in designing and analyzing electrical circuits, where the length of conductors impacts the overall performance and efficiency of the system.