Purpose: The battery has long been an important factor in the electronic age. Without batteries, portable electronic device are without use. This week's Scientific AmeriKen will focus on batteries connected in series and in parallel to determine which has a higher voltage output. The results of this experiment will provide Crucial information in future experiments regarding circuits.
Hypothesis: It is the hypothesis of this experiment that batteries that are connected in series will have a greater voltage output then those connected in parallel. The reasoning is because when the batteries are connected in series, they will be aligned in a positive to negative direction where voltage will be allowed to accumulate and increase the total output. In other words, this is just a guess.
Equipment: Various batteries (used in this experiment are 1.5 volt batteries (AA & D) and a 12v battery), Aluminum foil, a voltometer, pen and paper.
Procedure: The general procedure of this experiment will be to mix and match different batteries and different arangements and test the voltage output. The first step is to use the voltometer to test the voltage of each individual battery. Then connect the different batteries in parallel. To do this, using aluminum foil, connect the positive end of the batter to the positive end of the other battery. Connect the negative end of the battery to the other negative end of the battery. Then test with the voltometer. Then test all the batteries in series. This is done by connecting one batteries positive side with the negative side of the other battery. Then test with the voltometer. Record and compare results.
|Experiment Done||Description of Experiment||Results of Experiment|
|AA battery control test. Battery claims to output 1.5 V||Battery output 1.5 V|
|AA battery control test. Battery claims to output 1.5 V||Battery output 1.2 V|
|12V battery Control test||Battery output 11.5 V|
|D battery control test. Battery claims to output 1.5 V||Battery output 1.5 V|
|Two "AA" batteries connected in Parallel. 1.5 V and the 1.2 V.||Battery output 1.5 V|
|One "D" battery connected to the 1.5 V "AA" battery in Parallel||Battery output 1.5 V|
|12 V battery connected to the 1.5 V AA in Parallel||Battery output 1.5 V|
|1.5 V and 1.2 V "AA" batteries connected in Series||Battery output 2.7 V|
|1.5 V "AA" and "D" battery connected in Series||Battery output 2.7 V|
|1.5 V and 1.2 V "AA" batteries and "D" battery connected in Series||Battery output 4.3 V|
|1.2 V "AA" and 12 V battery connected in Series.||Battery output 12.7 V|
|"D" battery connected to the two "AA" batteries and then connected to the 12 V battery in Series.||Battery output 15.9 V|
|"D" battery is connected
to the 1.5 volt "AA" then connected to the 12 V and finally the 1.2 V "AA"
|Battery output 15.9 V|
from the observations it would appear that the maximum voltage output in
a battery connected in parallel would be limited to the battery with the
smallest battery output, in the case of this experiment 1.5 V. Althought
one battery only outputed 1.2 V, it is believed that because it could at
one time hold a capacity of 1.5 V then while connected in Parallel, it
could output that much. Batteries connected in series seemed to have an
endless amount of voltage output, limited to the number of batteries available.
It is therefore the conclusion of this experiment that the hypothesis was
correct in assuming series to have a higher voltage output. In effect,
if one wishes for a circuit to have higher voltage running through it,
then they would have to run the batteries in series. If they wanted to
voltage output to last longer, then they would need to run them in parallel.