[" A wire of radius "r" has resistance "R." If it is "],[" stretched to a radius of "(3r)/(4)," ,its resistance "],[" becomes "]

A wire of radius r has resistance R . If it is stretched to the wre of r/2 radius, then the resistance becomes

A given piece of wire of length l and radius r and resistance R is stretched uniformly to wire of radius (r)/(2) .Its new resistance is:

When a wire is stretched and its radius becomes r//2 then its resistance will be

When a wire is stretched and its radius becomes r//2 then its resistance will be

" A wire of length L and resistance "R" is stretched to get the radius of cross-section halved.What is the new resistance "

A wire of resistance R is uniformly stretched until its radius is halved. Its new resistance is

A wire is of resistance R is stretched, so that its radius decreases b factor n. Calculate its new resistance.

A wire of length l has a resistance R. If half of the length is stretched to make the radius half of its original value, then the final resistance of the wire is