*The SI system of units is a modern form of the metric system. It is widely used in the electrical field throughout the world.***In this section you'll read about SI:**

- Base units
- Derived units

**are the seven foundational units. Originally length, mass and time were identified as base quantities. Later on, electric current was added as the base unit so as to represent the electrical quantities. After some time units for temperature along with substance and luminous intensity were added. At present this system contains 7 quantities.**

*Base units*

**are a combination of base units which are formed by combining, multiplying or by taking powers of different numbers.**

*Derived units*
Let's define them all here:

Unit | Definition |
---|---|

Charge | The intrinsic property of electrons and protons |

Resistance | Opposition of body against current flow |

Voltage | The potential difference between two points |

Current | Flow of charges from one point to another |

Power | The product of current and voltage |

Energy | Power per unit time |

Capacitance | Ability of body to store charge |

Frequency | Number of cycles covered by sine wave per second |

Magnetic flux | Integral of magnetic field passing through surface |

yeet

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