5 Questions
What does Ohm's law state?
$V = IR$
What happens to the resistance in Ohm's law?
It is constant, independent of the current
What is the unit of resistance?
Ohm ( ext{Ω})
What materials do not obey Ohm's law?
Non-ohmic materials
Who is Ohm's law named after?
Georg Ohm
Study Notes
Ohm's Law
- Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied across it, and inversely proportional to the resistance of the conductor.
- Mathematically, it is represented as I = V/R, where I is the current, V is the voltage, and R is the resistance.
Resistance in Ohm's Law
- According to Ohm's law, the resistance of a conductor remains constant, regardless of the voltage or current applied.
Unit of Resistance
- The unit of resistance is Ohm (Ω), named after Georg Ohm, the German physicist who formulated the law.
Materials that Disobey Ohm's Law
- Certain materials, such as semiconductors, superconductors, and diodes, do not obey Ohm's law, as their resistance does not remain constant with changes in voltage or current.
Origin of Ohm's Law
- Ohm's law is named after Georg Ohm, a German physicist who first formulated the law in 1827.
Test your knowledge of Ohm's law with this quiz. Explore the relationship between electric current, voltage, and resistance as defined by Ohm's law and deepen your understanding of electrical principles.
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