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:

A uniform wire of length / and radius r has a resistance of 100 Omega . It is recast into a wire of radius (r )/(2) . The resistance of new wire will be:

A resistance R is stretched to four times its length. Its new resistance will be

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

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

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