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===About Work Done===
: [[Work Done]] is measured in [[Joule]]s.
: [[Work Done]] can only be calculated for objects [[object]]s moving in the direction of the [[force]]. If the direction of the [[force]] and the motion of an [[object]] are [[perpendicular]] then no '''work''' is being done on the [[object]] by that [[force]].
===Equation===
Work Done = (Force X ) x (Distance moved in the direction of the force)
:<math> W = F \times d</math>
:<math> W = Fd</math>
:<math>W = (kx) \times x</math>
:<math>W = kx^2</math>
==Key Stage 4==
===Meaning===
[[Work Done]] is the amount of [[Energy Transfer|energy transferred]] by the action of a [[force]].
===About Work Done===
: [[Work Done]] is measured in [[Joule]]s.
====Work Done by a Force====
: [[Work Done]] by a [[force]] can only be calculated for [[object]]s moving in the direction of the [[force]]. If the direction of the [[force]] and the motion of an [[object]] are [[perpendicular]] then no '''work''' is being done on the [[object]] by that [[force]].
====Work Done by Electricity====
: '''Work''' can also be done by an [[Electrical Current|electrical current]] as the [[Electrostatic Field|electrostatic field]] inside a [[wire]] provides a [[force]] to move the [[electron]]s (or [[ion]]s).
===Equation for Work Done by a Force===
'' '''Work Done''' = (Force) x (Distance moved in the direction of the force)''
<math> W = Fd</math>
Where:
W = Work done
F = The [[Force]] applied to the [[object]].
d = The distance moved by the [[object]] in the direction of the [[force]].
===Equation for Work Done by Electricity===
'' '''Work Done''' = (Current) x (Potential Difference) x (time)''
<math> W = IVt</math>
Where:
W = Work done
I = The [[Electrical Current|current]] through the [[Electrical Component|component]]
V = The [[Potential Difference|potential difference]] across the [[Electrical Component|component]].
t = The length of [[time]] that the [[Electrical Current|current]] is flowing.
''NB: You do not need to remember this equation. However you do need to remember the two equations which are combined to make this equation.''
1. <math> P = IV</math>
2. <math> W = Pt</math>
''Equation 1 is [[Substitution (Maths)|substituted]] into equation 2 to give'' <math> W = IVt</math>.