Simple electronics question I'm a bit confused. Please help. 1. A battery is made from three 2V cells connected in series. If one of the cells is "dead," what is the voltage of the battery? Note that a voltmeter connected to a dead cell reads 0V. 2. A battery is made from three 2V cells connected in parallel. If one of the cells is "dead," what is the voltage of the battery? Note that a voltmeter connected to a dead cell reads 0V. |
Series = 4v Parallel = 2v Can't figure out your homework? :p |
parrallel only adds additional current, series add the voltage |
What he said. That's really basic ohms law. |
"dead" at time does not equate to 0V...2V cell does not necessarily equate to 2V, usually a little bit higher... series, gets you the sum of the voltage parallel, gets you the average of the voltages |
2nd one will probably be 0 as the dead one will bring the the 2 good ones down. first one could be 4 or 0. depends if the dead battery is shorted or open cct. |
*sigh* If the "dead" battery is merely drained, it would appear as an open circuit - first example would read 0V, second would read 2V. If the battery has failed internally and "shorted" (very rare), the first instance would read 4V, second would read 0V, as the dead battery would have drained the good ones, same as shorting a wire across them. |
lol. i think OP is just as confused as he was before. |
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I was replying to the OP. |
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