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currents
Battery
a battery
Generally, that is called a battery.
a battery's, series has more voltage and parallel has more current
Series.
a battery
Your question is very muddled and it is difficult to understand exactly what you are asking. Something is in "series" if it is connected in the circuit as a "daisy chain". Thus both loads AND batteries may be placed in series.
parallel battery wiring is hooking 2 batteries together in parallel series give you double the volts Clarification: Parallel battery wiring is where two or more batteries are hooked together in parallel (i.e. both/all positive battery terminals are wiredtogether, and both/all negative battery terminals are wired together. This results in a battery voltage which is the same as that of the individual batteries (typically 12V in most cars). The reason for doing this is to boost battery capacity- two identical batteries wired in parallel give twice the electical storage capacity of one battery. No increase in voltage is obtained with parallel wiring. Series wiring is where two or more batteries are hooked together in series (i.e. positive terminal of the first battery is hooked to the negative terminal of the second battery). The resulting voltage is the sum of the individual battery voltages - if two 12V batteries are hooked together, the resulting voltage will be 24V. No increase of storage capacity is obtained with series wiring.
Yes. Most flashlights have a series circuit involving a battery, a switch, and a bulb. More complex variants might have two bulbs in parallel, two or more bulbs on two switches, etc. but the basic principle is a series circuit - turn the switch on and the bulb illuminates.
Wire two of the 12 volt batteries in series and the third battery in parallel with the other two. As the two batteries wired in series will give you 24 volts but the amps of only one of the batteries, unless you need the extra amperage of that third battery I would just go with two batteries wired in series. But if you want to use three batteries then connect the positive from one battery to the negative of the other battery. This will give you 24 volts. Now just connect the negative of the third battery to the negative of the first battery connected in series with the second battery. Now connect the positive to the second battery to the positive of the third battery. You will now still have 24 volts but twice the amperage of one of the batteries.
Connect two 12 volt batteries in series and you will have 24 volts.