gcsescience.com                                       50                                       gcsescience.com

Electricity

The Equations that are used for Electricity.

Click on an equation below 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 that you should know include

P = E ÷ t     power = energy ÷ time.

Q = I x t    charge = current x time.

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

E = V x Q     energy = voltage x charge.

W = V x Q     work = voltage x charge.

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

back        Links        Electricity        Revision Questions        next

gcsescience.com      Physics Quiz      Index      Electricity Quiz      gcsescience.com

Home      GCSE Chemistry      GCSE Physics

Copyright © 2015 gcsescience.com. All Rights Reserved.