Physics AS unit 1 definition

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Define potential difference between two points

The energy converted from electrical potential enery to some other form per coulomb of charge flowing from one point to another
Define 'n'

The number of free electrons per unit volume
Define Ohm's law

The current flowing through a metal wire at constant temperature is proportional to the p.d across it
Define Newton's third law

If object A exerts a force on object B, then B exerts an equal and opposite force on A.
Define Centre of Gravity

The point where the entire weight of the body is considered to act.
Define Mean speed

Total distance travelled÷total time taken
Mean velocity

Author:	Anonymous
ID:	214150
Card Set:	Physics AS unit 1 definition
Updated:	2013-04-17 22:16:14
Tags:	Definitions unit physics
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Description:	physics, electricity kinematics etc
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