Sunday, February 9, 2014

Electricity, Importance of electricity, Electric Current, Resistance


Electricity is a energy form that is resulting from the existence of charged particles, such as positive and negative charges orbiting around the nucleus. Electricity is used for cooking, communication, laptops among many other things in our everyday lives. Electricity is important because it helps us to see at night when its dark, power our televisions, it is made by burning oil and natural resources. Electric Current is the rate of charge flow past a given point in an electric circuit, measured in coulombs/second also known as Amperes. Resistance is the ratio of voltage applied to the electric current that flows through it using the equation R=V/I. If the resistance is constant over a range of voltage then Ohm's law can be used which is, I=V/R.

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