[" The electric resistance of a certain wire of iron is "R" .If its "],[" length and radius are both doubled,then "]

The electric resistance of a certain wire of iron is R . If its length and radius are both doulbed, then

The electric resistance of a certain wire of ron is R. If its length and radius are both doubled, then

How is the resistance of a wire affected if its (a) length is doubled, (b) radius is doubled ?

A wire stretches by a certain amount under a load. If the wire’s length and diameter are both doubled, the stretch caused by the same load is :

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 cylindrical wire of length L and radius r has a resistance R. The resistance of another wire of the same material but half its length and half its radius will be:

The resistance of certain length of wire is R Ohm . It is doubled on itself so that its length is l/2. Its resistance becomes.