Monday, 25 April 2016

Difference between volts, watts, and amperes

Volts, watts, and amperes all have things to do with electricity. You may think them similar, but they record different things about electricity!

Amperes record the flow rate of a specific flow rate of a circuit. In equations, it is represented by I. It is one of the SI basic units and is shortened to amp. It is named after André-Marie Ampère, a French mathematician.

A volt is named after Alessandro Volta, the first person that created a battery. Electrons move to different atoms randomly, but if they are all in one direction, a current is formed. What do they need? Something called Electromotive force, or Volts. It measures the potential of electric charge between two places. It is represented by E.

A watt is named after the Scottish engineer James Watt. Usually, it is represented by the symbol P. You can remember this by thinking that P equals power ,which watt defines. It expresses energy per unit per time.


An equation: P = I x E. Basically, Watts equals Volts times Current (Amperes).

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