19.1 Physics 6B Electric Current

19.1 Physics 6B Electric Current - Physics 6B Electric...

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Physics 6B Electric Current And DC Circuit Examples Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB
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Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB Electric CURRENT is the rate at which charge flows (usually through a wire). We can define it with a formula: t Q I = Units for electric current are  Coulombs/second, also called  Amperes (A)
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Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB Electric CURRENT is the rate at which charge flows (usually through a wire). We can define it with a formula: t Q I = Units for electric current are  Coulombs/second, also called  Amperes (A) Electric Current will flow through a wire when there is a potential difference, supplied by a battery or some  other source of ‘electromotive force’ (called EMF). EMF is just a fancy name for voltage.* * ‘Electromotive Force’ is an antiquated phrase that does not mean what it seems to imply – voltage is not a force!
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Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB Electric CURRENT is the rate at which charge flows (usually through a wire). We can define it with a formula: t Q I = Units for electric current are  Coulombs/second, also called  Amperes (A) Electric Current will flow through a wire when there is a potential difference, supplied by a battery or some  other source of ‘electromotive force’ (called EMF). EMF is just a fancy name for voltage.* Most of the time the current is not perfectly free to flow along the wire – there is some RESISTANCE to the  flow of the charges.  Resistance depends on the material that the wire (or other electrical devices in the  circuit) are made of, and how they are configured. Units for resistance are Ohms ( Ω ). * ‘Electromotive Force’ is an antiquated phrase that does not mean what it seems to imply – voltage is not a force!
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Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB Electric CURRENT is the rate at which charge flows (usually through a wire). We can define it with a formula: t Q I = Units for electric current are  Coulombs/second, also called  Amperes (A) Electric Current will flow through a wire when there is a potential difference, supplied by a battery or some  other source of ‘electromotive force’ (called EMF). EMF is just a fancy name for voltage.* Most of the time the current is not perfectly free to flow along the wire – there is some RESISTANCE to the  flow of the charges.  Resistance depends on the material that the wire (or other electrical devices in the  circuit) are made of, and how they are configured.
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