cylindrical wire is stretched to increase its length by 10%. Calculate the

percentage increase in the resistance of this wire.

The table below lists various characteristics of two metallic wires, A and B.

If wire A has a resistance of R, then wire B has a resistance of..

The four wires shown below are made from the same resistive material. Rank the resistance in the wires

from low to high. Explain your answer.

The four wires shown below are made from the same resistive material. The ratio between resistance of (D) to its of (B) is...

V in = 12V

Z1 = 3Ω

In the circuit above, your aim is to limit the current to 1A

, so you must design a resistor to serve in the place of Z2 .

To make this resistor, you have a spool of mystery metal, which has a cross sectional area of 1mm^2

and a resistivity of, ρ=3*10^-3 Ω.m

. What length of wire should you cut

You have a very long wire connected to an electric station. Even though you are suppling 120V from the source, by the time it reaches the station, there is a loss of voltage. The wire is 100 meters long.

If 100V

reaches the power station, what is the resistance per unit length of the wire? Assume a current of 2A.

Which of the following actions would increase the resistance of a wire by a factor of 4 ?

Find the resistivity of a cylindrical wire with resistance 100Ω

, length 2m

, and cross sectional area of 4mm^2

If a current intensity passing through a wire increases to the double , so that it's resistance.