eguruchela


Electric Current


I: current (A), q: charge (C), t: time


e33


Ohm's Law



U: electric potential difference between the ends of the resistor R


e34


Work Created By A Current (Joule's Law)



e35


Electrical Power



e36


Resistance



ρ: resistivity of the material (Ωm), l: length (m), A: cross-section area (a2)


e37


e38


Series Circuits



p5


e39


e40


e41


Parallel Circuits



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e39


e42


e43


Work Or Heat Energy Produced By A Resistor



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Power Consumption Of A Resistor



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Electromotive Force Of An Electrical Generator



W: work of force (J), q: charge(c)


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Generators In Series



r: internal resistance of the generator


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Generators In Parallel



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Generators In Series-Parallel



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Work And Power Of Generator



H: Efficiency of genarator


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