Resistance is the specific phenomenon that refers to the measurement of opposition to the current flow within an electrical circuit. Ohms is the unit for measuring the resistance. Resistivity offers the resistance of the mercurial per unit length for a particular unit cross section.
$\mathrm{\rho = RA/l}$ is the SI unit of resistivity. Resistance usually denotes the opposition within an object which prevents the flow of current. Resistivity is the property of an element by which the object is made.
Resistance usually means the properties of the elements by which it resists the flow of the electricity. In other words, it can e said that resistance denotes the prevention of current flow within particular equipment.
Figure 1: Resistance
Resistance is usually faced by the electron when it passes through the loads of external wires and circuits. As opined by Leilaeioun et al. (2019), therefore, resistance refers to obstacles within change’s flow. Electron generally does not flow in a direct way. The journey usually occurs in a zigzag path
This type of journey occurs because of the multiple collisions of the electrons with the atoms within the objects. Thus, the elections face obstacles in the movement so in simple words they face resistance. Resistance discourages movement of the charge.
Resistivity is commonly used to measure the flow of the electrical current and it also means how strong it can flow thrush the materials. As opined by Shahriari et al. (2020), the particular indication of conducting ability of an object is called resistivity
Figure 2: Resistivity
The resistivity of the components relies on the temperature and electronic structure of a particular component. Temperatures determine the resistivity of the materials. It is usually noticed that its temperature rises, and resistivity is also increased with the temperature.
As opined by Aigner et al. (2020), in different materials, the different resistivity can be found. There are several martial which consist of high resistivity as well as there are other materials which possess low resistivity. The materials which have a low resistivity also have a low resistance to charge flow. Hence, the materials with low resistivity are the better conductors.
The resistivity and resistance hold a prominent significance in the field of science. These two important physical properties have a large importance in the field of electricity. Resistance prevents the electricity from flowing. Resistance is a significant factor in electronic circuits. Higher resistance generally creates more difficulties in the current flow, whereas low resistance creates fewer obstacles to the electric flow in the materials.
The resistivity of a certain conductor is important as it helps to use the correct material in the right places in electronic as well as electrical components. Low-level resistivity is needed for a better quality conductor.
As opined by Oliveira et al. (2020), different martial generally possess a different kind of resistivity. Electrical conductivity depends on the properties of electrical transport.
There is a relationship existed between resistance and resistivity. If the resistivity increases the resistance also increases with it.
There are certain differences that are presented between resistance and resistivity. These are the two different types of properties of an atom. This particular distinguishes are mentioned below -
| Resistance | Resistivity |
|---|---|
| Resistance commonly refers to the special characteristic of the conductor which generally creates obstacles in the flowing of the electric current. | Resistivity mentions a particular physical property of the substance which possesses a particular dimension. |
| Resistance is straightly proportional to temperature and length and it is inversely proportional to cross-sectional area of a particular material. | Resistivity is proportional to only the temperature of the conductor. Resistivity also relies on the particular nature of material of conductor. |
| It is presented with the symbol of R | Resistivity is represented with the symbol of $\mathrm{\rho\:}$. |
| The formula of resistance is $\mathrm{R = \rho(L/A) \:or, \:R \:=\: V/I\: I\: =\: Current\:V = Voltage, \rho = Resistivity}$ | Resistivity possess the bellow formula- $\mathrm{\rho\:=\:(R×A)/L \:L= Length, \:R = Resistance' \:A = Cross-sectional area}$ |
| Ohm denotes the SI unit of resistance. | Ohm-metre mentions the SI unit of resistivity. |
| The properties of resistance are mainly used in multiple places like fuses, heaters, and sensors. | The measurement of electrical resistivity is used as the quality control test for calcareous soil. |
Resistivity and resistance are critical physical characteristics of the components Resistance describes the electrical measurement that further helps to determine the flow of the electricity within a particular circuit. Resistance usually denotes the hindrances faced by a particular electron in an atom. As the electrons do not follow a straight path but it follows a zigzag way when travelling through the atom. The particular collision creates hindrances in the movement of the electrons and this particular obstacle is further known as resistance. Resistivity helps the experts to include the correct materials in the correct electronic devices by comparing different materials based on their resistivity
Q1. What is the importance of resistivity?
The resistivity is the features of an object. It is used for the fabrication of a wire or various types of electrical substances. It is the intrinsic property that is used for the comparison of different materials
Q2. What is ohm?
Ohm (Ω) represents the unit of electrical resistance. It derives its name from Georg Simon Ohm, a German physicist.
Q3. What is ohm-meter?
The Unit of the resistance is called the ohm-meter. It is represented by the symbol (Ωm).
Q4. What is the importance of resistivity?
Resistivity is the important characteristic feature of a particular object. Experts use resistivity to compare various materials to judge their ability to regulate electric currents.
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