Basic Theory

Ohm's Law Detailed

Ohm's Law Detailed Basic Concept Ohm's Law is the most fundamental law in electricity, describing the relationship between current, voltage, and resistance in a…

About 5 min read beginner

Ohm’s LawVoltageCurrentResistanceBasics

Ohm's Law Detailed

Basic Concept

Ohm's Law is the most fundamental law in electricity, describing the relationship between current, voltage, and resistance in a conductor.

Mathematical Expression

Basic Formula

V = I × R

V (Voltage): Voltage, unit Volt (V)

I (Current): Current, unit Ampere (A)

R (Resistance): Resistance, unit Ohm (Ω)

Physical Meaning

Ohm's Law states: Under constant temperature, the current in a conductor is directly proportional to the voltage across it and inversely proportional to its resistance.

Applicable Conditions

Constant temperature: Conductor temperature doesn't change with current

Linear resistance: Resistance doesn't change with voltage/current

Metallic conductors: Mainly applicable to metals

Electrolytes: Some electrolytes also apply

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