" 28.If the diameter of a resistance wire is halved,then its resistance becomes: "

If the area of cross-section of a resistance wire is halved, then its resistance becomes:

If a resistive wire is elongated, its resistance?

When the diameter of a wire is doubled, its resistance becomes:

If length of a metallic wire becomes n times, its resistance becomes

If radius of a metallic wire becomes n times, its resistance becomes

A wire of length l is drawn such that its diameter is reduced to half of its original diameler. If the initial resistance of the wire were 10Omega . its resistance would become

The resistance of a wire varies directly with its length and inversely with its area. If a certain piece of wire 10 m long and 0.10 cm in diameter has a resistance of 100 ohms, what will its resistance be if its is uniformly srretched so that its length becomes 12 m?

The resistance of wire of length l and area of cross-section a is x ohm. If the wire is stretched to double its length, its resistance would become: