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Electricity

Equations.

Click on the equation for more information.

The two most important equations in electricity are given below.

P = V x I     Power = Voltage x Current.

V = I x R    Voltage = Current x Resistance.


Other equations which you should know include

Q = I x t    charge = current x time.

E = V x I x t    energy = voltage x current x time.

The equations work whether the electricity is
direct current or alternating current.

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