Answer

Verified

52.2k+ views

**Hint**Resistivity is the quantity which opposes the flow of electric current. Conductivity is the measure of how easily the current flows through a material.

The relation between resistivity and conductivity can be explained as

Resistivity is inversely proportional to conductivity.

**Complete step-by-step answer:**

The ease of flow of electric current through a material is called Conductivity. A conductor is a material which offers very low resistance to flow of an electric current. Electrical conductivity signifies how easily a current will travel through that material. Copper wires are a good example for this.

Thermal conductivity tells us how easily the material will allow thermal energy (heat) through it. Most likely, metals allow the heat to pass through them.

Resistivity is the measure how easily the material opposes the electricity. Resistivity may also be called as the specific electrical resistance and volume resistivity, but these are not mostly used. The SI unit of electrical resistivity is the ohmmeter \[\left( {\Omega - m} \right)\]. It is commonly represented by the Greek letter, $\rho ,$rho.

The relation between conductivity and resistivity can be stated as,

The conductivity is inversely proportional to resistivity which can be expressed as

$\operatorname{Re} sistivity = \dfrac{1}{{conductivity}}$

The product of resistivity and conductivity is constant because they both are inversely proportional when the temperature of metallic resistor is increased.

**Therefore, the option (D) is correct.**

**Note**The electrical resistivity formula can be expressed as

$\rho = R\dfrac{A}{l}$

where, $R$ is the electrical resistance measured in ohms

$l$ is the length of the material measured in metres

$A$ is the cross-sectional area measured in square metres.

Recently Updated Pages

In a family each daughter has the same number of brothers class 10 maths JEE_Main

Which is not the correct advantage of parallel combination class 10 physics JEE_Main

If 81 is the discriminant of 2x2 + 5x k 0 then the class 10 maths JEE_Main

What is the value of cos 2Aleft 3 4cos 2A right2 + class 10 maths JEE_Main

If left dfracleft 2sinalpha rightleft 1 + cosalpha class 10 maths JEE_Main

The circumference of the base of a 24 m high conical class 10 maths JEE_Main

Other Pages

when an object Is placed at a distance of 60 cm from class 12 physics JEE_Main

Explain the construction and working of a GeigerMuller class 12 physics JEE_Main

Electric field due to uniformly charged sphere class 12 physics JEE_Main

Which of the following sets of displacements might class 11 physics JEE_Main

Differentiate between homogeneous and heterogeneous class 12 chemistry JEE_Main

If a wire of resistance R is stretched to double of class 12 physics JEE_Main