1 Answer
No, the ampere (A) is not considered a fundamental unit. It is one of the seven base units of the International System of Units (SI), but it's derived from the definition of electric charge and current.
The ampere is defined as the constant current that, if maintained in two straight, parallel conductors of infinite length and negligible cross-section, would produce a force of \( 2 \times 10^{-7} \) newtons per meter of length between the conductors. So, the ampere relates to other physical concepts like force and charge.
Fundamental units in the SI system include:
While the ampere is fundamental in the SI system, its definition depends on the behavior of electric charges and forces, linking it to other physical quantities. So, it’s derived, not purely fundamental like length or time.
The ampere is defined as the constant current that, if maintained in two straight, parallel conductors of infinite length and negligible cross-section, would produce a force of \( 2 \times 10^{-7} \) newtons per meter of length between the conductors. So, the ampere relates to other physical concepts like force and charge.
Fundamental units in the SI system include:
- Meter (m) – for length
- Kilogram (kg) – for mass
- Second (s) – for time
- Ampere (A) – for electric current
- Kelvin (K) – for temperature
- Mole (mol) – for amount of substance
- Candela (cd) – for luminous intensity
While the ampere is fundamental in the SI system, its definition depends on the behavior of electric charges and forces, linking it to other physical quantities. So, it’s derived, not purely fundamental like length or time.