Resistance Formula
Georg Simon Ohm was a German physicist who gave a law which is known as Ohm’s law. According to Ohm’s law, the current flowing through a conductor is directly proportional to the potential difference across it.
V ∝ I
V = IR
The image added below shows a circuit with current I, voltage V, and resistance R.
Relationship between Voltage, Current, and Resistance
The relationship between Voltage, Current, and Resistance can be derived from Ohm’s law and is given as:
R = V/I
Where,
- V is the potential difference across the conductor (in Volts),
- I is the current through the conductor (in Amperes) and
- R is the constant of proportionality called Resistance (in Ohms).
Electrical Resistance
Electrical resistance is the obstruction offered by the material in the flowing of the current or charge through the material. Thus, the higher the resistance the lower the amount of current passing through it. It is the property of a material that tells us about the flow of the current through the material. The substances that easily conducts the electric current are called conductors and they have very low electrical resistance, on the contrary, the substance that does not easily conducts the electric current are called insulators and they have very high resistance.
In this article, we will learn about, electrical resistance, its formula, factors affecting electrical resistance, and others in detail.
Table of Content
- What is Electrical Resistance?
- Resistance Formula
- Factors Affecting Resistance
- Electrical Resistor Symbol
- What is Resistivity?
- Difference Between Resistance And Resistivity
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