Current-Scale-(Amperes)-Explanation-Of-Current-Power

Typical current in a lightning bolt 30 000 A

Electric kettle 10 A

Computer 1 A

Household light bulb 0.25 A

Typical lethal current 0.1 - 0.2 A

Current from an electric eel 0.07 A

Typical currents in nerve impulses in the body 0.000 000 010 A (10 x 10- 9A)

Current from 1 electron moving for 1 sec 0.000 000 000 000 000 000 16 A (1.6 x 10- 19 A)

V=I*R-Voltage-Amps-(Amperes)-Resistance-(Ohms)

The Relationship Between Voltage & Current

Georg Simon Ohm discovered that the amount of current that flows through a material is proportional to the potential difference or voltage applied across it. His famous law states that V = IR; if a certain voltage (V) is applied across a conductor, the size of the current (I) which flows is inversely proportional to the resistance (R) of the conductor.

The Ampere

The SI base unit for electrical quantities is the ampere. The definition of the ampere adopted in 1948, is: The 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 x 10- 7 newtons per metre of length.