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# Electrical current

### Definition

The **electrical current** is directed movement of electrical charges. Electric current intensity, often called as the electrical current that characterize globally the current, referring to the amount of electric charge crossing the considered section per unit time.

**1 ampere** is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 metre apart in vacuum, would produce between these conductors a force equal to 2 × 10^{–7} Newton per metre of length.

*system of units:* | SI; |

*statute:* | the base unit; |

*name the value:* | I; |

*unit name:* | ampere; |

*symbol unit:* | A; |

*dimension:* | I; |

*expression in other units:* | Bi, emu, esu, Gs; |

### Online converter

For separation of number integers and decimals, use the symbol – point [.]

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### Units of measurement

name | symbol |
value in SI unit: A | note |

1 ESU | esu | ≈ 3.335 641 × 10^{-10} | ^{(1)} |

1 franklin per secound | Fr/s | ≈ 3.335 641 × 10^{-10} | |

1 gauss | Gs, G | ≈ 3.335 641 × 10^{-10} | |

1 statampere | | ≈ 3.335 641 × 10^{-10} | |

1 gilbert | Gi | ≈ 0.795 774 7 | |

1 siemens volt | S·V | = 1 | |

1 volt per ohm | V/Ω | = 1 | |

1 watt per volt | W/V | = 1 | |

1 weber per henry | Wb/H | = 1 | |

1 coulomb per secound | C/s | = 1 | |

1 amper absolute | A | = 1.00015 | |

1 biot | Bi | = 10 | |

1 EMU | emu | = 10 | ^{(2)} |

#### Note

^{(1)} - ESU - electrostatic unit;

^{(2)} - EMU - electromagnetic unit;