The metals and alloys have very high resistivity in the range of `10^-6 Omega m` to `10^-4 Omega` m.

In the circuit given below, find the current through 10Omega .

Judge the equivalent resistance when the following are connected in parallel ----- 1Omega and 10^6Omega , 1Omega and 10^3Omega , and 10^6Omega .

Calculate the resistivity of a wire having resistance .02 ohm, length = 10 m and area = 1mm^2

A cell can be balanced against 110 cm and 100 cm of potentiometer wire respectively when in open circuit and when short circuited through a resistance of 10 Omega . Find the internal resistance of the cell.

12 identical wire each of resistance 6Omega are joined to form a cube. Find the resistance between the corner of edges of the cube.

Two cell of emf. 1.5v and 2 v and internal resistance 2 and 1Omega respectively have their negative terminal joined by a wire of 6Omega and positive terminal by another wire of 4Omega A third resistance of 8Omega connected mid point of these wire. Find the potential difference at the end of the third wire.

Find the resistance of a silver wire of length 5m and area of cross-section 4mm^2 . Resistivity of a silver is 1.6xx10_-8 Omega m.

A copper wire has diameter 0.5 mm and resistivity of 1.6 xx 10^-8Omega m. What will be the length of this wire to make its resistance 10Omega ? How much does the resistance change if the diameter is doubled?