Term
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Definition
| current consisting of charges that move back and forth in a circuit |
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Term
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Definition
| the moving part of an electric motor, consisting of dozens or hundreds of loops of wire wrapped around an iron core |
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Term
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Definition
| a combination of two or more electrochemical cells in series |
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Term
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Definition
| the contact points connected to a current source and the commutator of a motor |
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Term
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Definition
| the energy stored in chemical compounds |
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Term
| electromagnetic induction |
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Definition
| the process of generating an electric current from the motion of a conductor through a magnetic field |
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Term
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Definition
| a metal part of an electrochemical cell which gains or loses electrons |
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Term
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Definition
| a liquid or paste that conducts electricity |
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Term
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Definition
| the rate at which one form of energy is converted into another; the unit is Watt |
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Term
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Definition
| a battery in which the products of the electrochemical reaction can be turned back into reactants to be reused |
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Term
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Definition
| the parts of a generator that rotate with the armature and make contact with the brushes |
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Term
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Definition
| a transformer that decreases voltage |
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Term
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Definition
| a transformer that increases voltage |
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Term
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Definition
| a circular device with many blades that is turned by water, wind, steam or tides |
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Term
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Definition
| an electrochemical cell in which the electrolyte is a liquid |
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Term
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Definition
| a process in which substances change into new substances with different properties |
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Term
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Definition
| a device that controls the direction of the flow of current through an electric motor |
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Term
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Definition
| current consisting of charges that flow in only one direction in a circuit |
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Term
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Definition
| an electrochemical cell in which the electrolyte is a paste |
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Term
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Definition
| a device that converts mechanical energy into electrical energy |
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Term
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Definition
| a device that increases or decreases voltage |
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Term
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Definition
| the energy of moving electrical charges |
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Term
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Definition
| a device that converts chemical energy into electrical energy |
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Term
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Definition
| the ability to move an object some distance |
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Term
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Definition
| a device that uses an electromagnet to detect small amounts of current |
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Term
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Definition
| the energy an object has due to its movement or position |
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Term
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Definition
| the energy an object has due to its movement or position |
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Term
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Definition
| a natural resource that cannot be replaced if used up |
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Term
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Definition
| a natural resource that can be replaced in nature at a rate close to the rate at which it is used |
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Term
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Definition
| the part of an electrode above the surface of the electrolyte |
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Term
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Definition
| a device that increases or decreases voltage |
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