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 conducting wire of resistance R is halved. Find the effective resistance when the two halves are joined in (a) series (b) parallel.

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 a copper wire of length 5 m is 0.5 Omega. If the diameter of the wire is 0.05 cm, determine its specific resistance.