What is the difference between Resistance and Restivity?
Answers
Answer:
Resistance is the physical property of a substance because of which it opposes the flow of current i.e. electrons. Resistivity is the physical property of a particular substance which is having particular dimensions. ... Resistivity is only proportional to the nature and temperature of the particular material
Explanation:
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Explanation:
Difference Between Resistance and Resistivity
Understanding the difference between resistance and resistivity is certainly an important part of learning physics. Furthermore, an important difference between resistance and resistivity has to do with the flow of free electrons. Also, resistance is an aspect that opposes the flowing of free electrons. In contrast, resistivity is any material’s property that tells the resistance of the material with a particular dimension. Understanding the difference between resistance and resistivity will certainly help you in dealing with more complex topics of electricity.
Definition of Resistance
Resistance refers to a measure of opposition to the flow of current in an electrical circuit. Furthermore, the measurement of resistance takes place in ohms. Moreover, the symbolization of resistance takes place by the Greek letter omega (Ω). Also, the naming of resistance was after a German physicist Georg Simon Ohm (1784-1854).
Definition of Resistivity
One can certainly define resistivity as a measure of the resistance of a specific material of specific size to electrical conduction. One can also say that resistivity refers to as the volume resistivity or specific electrical resistance, even though such terms are not in popular usage.
Difference between Resistance and Resistivity
difference between resistance and resistivity
An important difference between resistance and resistivity is below
Parameter Resistance Resistivity
Definition Material’s property that provides an obstruction to the flow of current Resistance of a material having specific dimensions
Symbol R P
SI Unit Ohms Ohms-meter
Formula R = V/I or,
R = ρ(L/A)
V = Voltage, I = Current, ρ = Resistivity
ρ = (R×A)/L
R = Resistance, L= Length, A = Cross-sectional area
Dependence Temperature, Length, Cross sectional area of conductor Temperature
Applications Resistance’s property is useful in sensors, fuses, heaters etc Resistivity is effective as a quality control test
More Details about Resistance
An electron will encounter resistance if it travels through loads of external circuits and wires. Moreover, resistance refers to the hindrance to the charge’s flow. For an electron, the journey is not direct. This journey takes place from one terminal to another. The journey rather takes place along a zigzag path.
The zigzag path journey takes place due to the countless collisions of the electron with fixed atoms that are within the conducting material. Consequently, the electrons encounter a hindrance to their movement, in other words, a resistance. Furthermore, resistance discourages the movement of charge.
The rate at which the flowing of charge takes place from one terminal to another is due to the combination of two quantities. Most noteworthy, these two quantities are resistance and the electric potential difference whose establishment takes place between the two terminals. Also, the resistance to the charge’s flow in an electric circuit happens to be analogous to the frictional effects happening between water pipe and water.