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9 Cards in this Set
- Front
- Back
Electric Current
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The flow of positive charges through a conductor
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Electric Current
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Charge per unit time.
Units: Ampere. |
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Battery (or cell)
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Converts chemical into electrical energy.
EMF - electromotive force=voltage delivered by the battery. |
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voltmeter
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measures potential difference b/t two points in the circuit.
Mounted in parallel. |
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series
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when one component is arranged one after the other with no other circuit branches possible
The current is identical in the entirety of the circuit |
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parallel
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components are arranged so that current throughs each independent of the path through others.
The potential difference across parallel branches are equal. |
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Ohm's Law
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V=IR
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resistance of a wire
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(resistivity) x (length) / (cross sectional area)
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Electric Power
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Power = current X voltage
units: Watts = joules/sec |