202 Batteries and DC Circuits exam with answers

202 Batteries and DC Circuits exam with
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answers

Secondary cells are - CORRECT ANSWERS |\ |\ |\ |\ |\ |\



✔✔rechargeable


A cell condition called polarization causes a battery's -
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CORRECT ANSWERS ✔✔chemical reaction to slow down
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An element's atomic number equals the number of -
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CORRECT ANSWERS ✔✔protons in the nucleus of the
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atom


The specific gravity of a material is its density compared
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to the - CORRECT ANSWERS ✔✔density of water
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The life of a cell or battery is usually measured in -
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CORRECT ANSWERS ✔✔ampere-hours |\ |\




A(n) ___________ is an atom or a group of atoms that has
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an electrical charge. - CORRECT ANSWERS ✔✔ion
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, The capacity of a lead-acid battery is determined in part
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by the - CORRECT ANSWERS ✔✔number of plates
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Every molecule of water in a battery is composed of two
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atoms of ____________ and one atom of ____________. -
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CORRECT ANSWERS ✔✔H; O |\ |\ |\




The complete assembly of positive and negative plates
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and separators in a battery is called a(n) - CORRECT
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ANSWERS ✔✔element |\




The larger the volume of a dry cell, the longer its life for a
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given load. Which of the following 1.5 V dry cells has the
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longest life? - CORRECT ANSWERS ✔✔No. 6
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To obtain 6 V from a combination of dry cells, you need
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_________ cells connected in _________. - CORRECT
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ANSWERS ✔✔four; series |\ |\




The combination of one discharge and one recharge of a
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storage battery is called a - CORRECT ANSWERS ✔✔cycle
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Local - CORRECT ANSWERS ✔✔
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