Asked by darshan singh

If a wire of resistance R is melted and recast to half of its length then the new resistance of the wire will be
Answered by roshan
2R
Answered by abrar
Its new resistance is R
Answered by Karanveer Singh
R/4, refer to the formula; R= pL/A, where p is resistivity and L is it's length and A being the area.
The new area is twice the previous one and length is half, so the new resistance becomes R/4.
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