SI base quantities

The International System of Units (SI) defines seven base quantities, each associated with a specific physical property. These base quantities form the foundation for all other derived units in the system. The seven SI base quantities and their corresponding units are: 1. **Length** - Base Quantity: Length - Unit: Meter (m) 2. **Mass** - Base Quantity: Mass - Unit: Kilogram (kg) 3.

Electric current is the flow of electric charge in a conductor, typically measured in amperes (A). It represents the movement of electrons through a material, and this movement can occur in various forms, such as direct current (DC), where the flow of charge is uniform and directional, or alternating current (AC), where the flow periodically reverses direction. In a circuit, electric current is driven by a voltage difference (potential difference) created by a power source, such as a battery or generator.

Luminous intensity is a measure of the amount of light emitted from a source in a particular direction per unit solid angle. It is a fundamental concept in photometry, which is the science of measuring visible light as perceived by the human eye. The unit of luminous intensity in the International System of Units (SI) is the candela (cd).

The SI base units are the fundamental units of measurement defined by the International System of Units (SI). These units serve as the foundation from which other units of measurement are derived. There are seven SI base units, each corresponding to a specific physical quantity: 1. **Meter (m)** - the unit of length. 2. **Kilogram (kg)** - the unit of mass. 3. **Second (s)** - the unit of time.