Question

Unit of specific resistance is-

Answer 1

Hint- This question demands us the state the unit or SI unit of specific resistance. Resistance is the material’s property to resist the movement of electricity. The basic resistance to the current is known as the unit length resistance and the cross-section unit of the surface when the voltage has been added to the surface.

Complete step-by-step answer:
The mathematical representation is as follows:
$$\Rightarrow \rho ={\displaystyle \frac{RA}{l}}$$
$$\rho$$- specific resistance
R is resistance
A is cross-sectional area
L is length of the material

Unit of specific resistance is $${\displaystyle \frac{\mathrm{\Omega }\times m^2}{m}}=\mathrm{\Omega }m$$
Hence, the unit of specific resistance is $$\mathrm{\Omega }m$$.

Electrical resistivity and reverse, electrical conductivity is a basic feature of a substance that is able to measure how intensely it is avoiding or transmitting electrical currents. Low resistivity shows a material that allows easy electricity.

Resistance is the resistance to the movement of electric current provided by a material. The uppercase letter R is represented. Om, sometimes written as a word, and sometimes symbolized by the Greek letter omega (Greek omega letter), is the standard unit of resistance.

If an electric current of one ampere passes through a component that has a potential variation (voltage) of one volt, the component's resistance is one ohm. (See Ohm's Law for further discussion of current resistance and voltage relationships)

Note- Where the current is blocked by an electric current through a bulb or conductor, it is known as electric resistance and is referred to as R. Each material has an electrical resistance and that is why conductors give heat when it passes by. Ohms is named after a German physicist who studied the relationship between timing, current and resistance, Georg Simon Ohm (1784-1854). The formulation of Ohm's law is a credit to him.