Ohm is an electrical resistance unit used in circuit calculations and component ratings.
The ohm is named after German physicist Georg Simon Ohm, who published the law relating voltage, current and resistance in 1827.
Measurement system: Electrical engineering and circuit-analysis usage. SI equivalent: 1 Ω = 1 Ω.
Ohm facts
- Unit name
- Ohm
- Symbol
- Ω
- Category
- Resistance
- Measurement system
- Electrical engineering and circuit-analysis usage
- SI equivalent
- 1 Ω = 1 Ω
- Common uses
- Resistors, circuit design, diagnostics and electrical calculations
Definition of the ohm
Ohm is an electrical resistance unit used in circuit calculations and component ratings.
Measurement system and SI relationship
Electrical engineering and circuit-analysis usage
SI equivalent: 1 Ω = 1 Ω
History of the ohm
The ohm is named after German physicist Georg Simon Ohm, who published the law relating voltage, current and resistance in 1827.
Where is the ohm used?
Resistors, circuit design, diagnostics and electrical calculations