Mathematics · Current and Resistance
The diameter of a wire is reduced to one-half while keeping its length constant. The new resistance of the wire will be:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Half of the original resistance
- 2One-fourth of the original resistance
- 34 times the original resistance✓
- 42 times the original resistance
Correct answer
4 times the original resistance
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