The resistance of a wire is 10 ohm. The resistance of a wire whose length is twice and the radius is half, if it is made of same material is

The new resistance of wire of R Omega , whose radius is reduced half, is

The resistance of a wire is 5 ohm at 50^@C and 6 ohm at 100^@C . The resistance of the wire at 0^@C will be

The resistance of a 50 cm long wire is 10 Omega . The wire is stretched of uniform wire of length 100 cm. The resistance now will be

The resistivity of iron is 1 xx 10^(-7) ohm -m. The resistance of a iron wire of paritcular length and thickness is 1 ohm. If the length and the diameter of wire both are doubled, then the resistivity in ohm-m 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

The resistance of a wire of length 40 m and radius o.25 mm is 10 Omega . The conductivity of the material of the wire is

The resistance of a wire is 20 ohm . It is so stretched that the length becomes three times, then the new resistance of the wire will be