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368447
Energy, Power and Heat Mind Map
Description
This Mind Map outlines concepts about energy, power and heat. Understanding these is essential for anyone studying physics
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beginner physics
science
science
leaving certificate
Mind Map by
PatrickNoonan
, updated more than 1 year ago
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Created by
PatrickNoonan
over 10 years ago
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Resource summary
Energy, Power and Heat Mind Map
Ohm's Law
V= IR
I = V/R
R= V/I
states that the current through a conductor between two points is directly proportional to the potential difference across the two points.
Power and resistance
H = I^2R = V^2/R
Ac/ Dc
Heat
H = I^2Rt = Pt
a process of transfer of energy between a system and its surroundings other than by work or transfer of matter.
Kilowatt Hours
Power
P=IV
Power is the rate at which energy is generated or consumed and hence is measured in units (e.g. watts) that represent 'energy per unit time'
Watt
Unit of Power
one watt is the rate at which work is done when one ampere (A) of current flows through an electrical potential difference of one volt (V).
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