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A DC circuit, of course, does not need to be grounded. It just needs a path from the negative to the positive (the actual flow of electrons). One can often simplify the wiring by using a common "ground" bus which might include a car's chassis for example. If the negative terminal is grounded, then everything that is not "ground" would be positive. Likewise, if the positive terminal is grounded, then everything that is not "ground" is negative. Since you are looking at return paths... you could potentially have 2 batteries, one that is negative grounded and one that is positive grounded. Consider two 12 volt batteries: +12V(a) -- (-12)V(b) -- GROUND -- (+12V)(c) -- (-12V)(d) If you connect (d) to either (b),(c), or Ground, one would have a 12V difference with (d) being negative. If you connect (a) to either (b), (c), or Ground, then one would have a 12V difference with (a) being positive. If you connect (a) to (d) then one would have a 24V difference with (a) still positive and (d) still being negative. One note... When Steel is given a negative potential (charge), it corrodes less than when it is given a positive potential (charge). This is the reason why negative ground is almost universally used on automobiles.
What else can I help you with?
How does current flow along a conductor?
Conventional Current states that current moves from the positive terminal of a power supply to the negative terminal.Electron Flow states that electrons move from the negative terminal of a power supply to the positive terminal.
A regulated dc power supply contains three terminals.positive negative and ground.a positive terminal for positive connection a negative for negative connection What is the use of ground terminal?
Grounding terminals are used to connect the electrical equipment or wiring system to the Earth. It's purpose is to reduce the risk of electrical shock in the event of a fault current. In most homes, the wiring system is permanently grounded to a metal pipe that connects to an underground water-supply system or to a metal rod that has been driven into the ground.
How can a capacitor be charged using a battery charger?
To charge a capacitor using a battery charger, you connect the positive terminal of the battery charger to the positive terminal of the capacitor, and the negative terminal of the battery charger to the negative terminal of the capacitor. The battery charger will then supply a voltage to the capacitor, causing it to store electrical energy.
Will you get a electric shock when the negative terminal of the dc power supply is grounded and the positive terminal is held by us?
Only if we are also in contact, directly or indirectly, with ground. By ohm's law, current is voltage divided by resistance. Conductance is the inverse of resistance, so current is voltage times conductance. No conductance - no current.
Why is there a positive and negative terminal in electical device?
there are positive and negative terminal in electrical device who operate on dc power supply because they wont work if the connection is reversed. but devices who operate on ac usually dosenot have polarity marks .
Why do you not get battery symbol on your laptop sometimes after you on power supply in your laptop made by Toshiba model no A200?
Note: When interconnecting A200 batteries (cells), they must be identical in voltage and amp rating! Batteries may be connected in series. The positive terminal of the first battery is connected to the negative terminal of the second battery; the positive terminal of the second is connected to the negative of the third, and so on. The voltage of the assembled battery is the sum of the individual batteries. The batteries are connected: + to - to + to - to + to -, etc. The capacity of the battery is unchanged. Batteries may also be connected in parallel. The positive terminal of the first battery is connected to the positive terminal of the second battery, the positive terminal of the second is connected to the positive of the third; the negative terminal of the first battery is connected to the negative terminal of the second battery, the negative terminal of the second is connected to the negative of the third and so on. The batteries are connected: + to + to + and - to - to -. In this configuration, the capacity is the sum of the individual batteries and voltage is unchanged.
Why do telecommunication systems use negative voltage?
negative polarity is achieved by grounding the positive terminal of power supply system and the battery bank. This is done to prevent electolysis depositions.
Is the positive terminal of an ammeter connected to the positive terminal of the energy source?
No. An ammeter is to be connected in series, between the device and the battery's positive output, Its NEGATIVE terminal (red lead) has to be connected to the POSITIVE of the battery. Its positive terminal (black lead) will then be connected to the device's positive terminal. (Connecting an ammeter in series with a power supply by itself may damage or destroy the meter.)Almost every single digital ammeter made will indicate reverse current, so the worst you might get is a displayed reading of a negative amperage if you connected it in reverse.(For an illustration, see the related link)
Where does conventional current start flowing from?
Conventional current starts from the positive terminal of the power supply, ventures forth to do its business throughout the associated external electrical circuit, and eventually returns to the negative terminal of the power supply to end its journey.
In DC motors why you are connecting fuse to positive and negative terminal and in single phase AC motor why you are connecting fuse to phase line and neutral link to neutral line?
in ac supply both positive and negative cycles contain in single phase the fuse only required for supply side but in dc supply positive and negative seperated by two terminals so we provide two fuses.
The polarity of an eletromagnet is determined by the?
the way in which the positive & negative terminals on the battery or power supply are attached to the electromagnet. switching the leads from the positive terminal to the negative one, and the negative one to the positive terminal should reverse the polarity of your electromagnet.
What will happen to dc signal if positive probe connected to negative terminal and negative probe connected to positive of the dc supply?
If you are referring to using a volt meter then you will just get a negative reading on most modern digital meters. If you are using an old analogue meter you may get no reading.
