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Related Flashcards
Cards In This Set
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Current flow
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When a flow of electrons along a conductor occurs
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Circuit
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Pathway for the movement of electrons
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Electromotive force (emf)
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An external force exerted on electrons to make them flow through a conductor (measured in what?)
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One ampere (A) of current flowing.
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When 6,250,000,000,000,000,000 electrons pass a given point in one second
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Coulomb (C)
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When 6,250,000,000,000,000,000 electrons stored on an object (a static charge) are not moving
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Free Electrons
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If a material has many electrons that are free to move away from their atoms, that material will be a good conductor of electricity
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Ohm's Law
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The strength of the current is directly proportional to the voltage and inversely proportional to the resistance
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Definition of Power
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The rate at which work is done
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Definition of Watt (W)
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The power that gives rise to the production of energy at the rate of 1 joule per second (W=J/s)
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Definition of a Joule
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The work done when the point of application of force of 1 Newton is displaced a distance of 1 meter in the direction of the force (J=N*m)
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One horsepower
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Horsepower rating of electric motors
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Power = volts*amperes (P=E*I)
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Resistance depends on how many factors?
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Elastic Recoil definition
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A force applied to a solid distorts the shape of the solid, causing it exert a force back on the force that distorted it
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How many basic simple machines are there?
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