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It is an oxidation/reduction reaction. Electrons flow from anode to cathode.
Emmanuel Ward
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Does a battery supply the electrons in an electric circuit?
No, is it incorrect to say that a battery produces the charges that circulate in a circuit. Some might suggest that a battery is a current source, but the battery should most properly be considered a voltage source. It generates the electromotive force (emf or voltage) that causes charges to move. (It does this through electrochemical reactions.) The charges that circulate in a circuit (which might be termed the current flow) are already in the conductor and components. All the battery does is produce the voltage (the force) to move charges. Let's look at current flow and see why things might be best looked at in the manner we've stated.Note that the way a battery moves charges is to "inject" an electron into the circuit where it is tied to the negative terminal of that battery. The electron causes one electron in the circuit at the terminal to "move over" and that will cause another electron to "move over" and so on. This will continue until the "last electron" in the circuit at the positive terminal of the battery leaves the circuit and "goes into" the battery. Current flow in the circuit is like musical chairs with electrons everywhere in the circuit "moving over a space" to cause the current flow.Having gone through all that, it should be easier to see why a battery probably should not be considered the producer of charges that circulate in a circuit. Rather, the battery is the source of the voltage that drives the charges (the current) in the circuit.
How a battery causes electron to move in a circuit?
It is an oxidation/reduction reaction. Electrons flow from anode to cathode.
What do Electrons move in a circuit and have millions of?
Electron cloud i think.
What supplies energy to move through a circuit?
A battery
What supplys energy to move electricity through a circuit?
A battery supplies energy to move electricity through a circuit (Remember, a circuit is a wire.)
Does the same electron move in the whole circuit?
No. It is more like one electron bumping into the next electron - passing along its energy.
Do electrons from a battery reach a bulb before it light?
No, electrons from a battery don't reach the bulb before it lights. An electric current is not simply a flow of electrons. Rather, an electron in a circuit will move only a short distance and then nudge another electron into motion, which will do the same thing with yet another electron. So while the current moves through the entire circuit, individual electrons do not unless it is left on for a very long time.
Do electrons from a battery reach the bulb before it lights?
No, electrons from a battery don't reach the bulb before it lights. An electric current is not simply a flow of electrons. Rather, an electron in a circuit will move only a short distance and then nudge another electron into motion, which will do the same thing with yet another electron. So while the current moves through the entire circuit, individual electrons do not unless it is left on for a very long time.
What supplies energy to move elecricity through a circuit?
A battery
What happens to a bulb when you move it to the battery on a circuit?
It doesn't matter where the bulb is in respect to the battery, as long as the circuit is complete, the bulb will light up.
What happens to a bulb when you move it closer to a battery on a circuit?
The bulb will get brighter
Why potential difference is necessary to produce current in a circuit?
AnswerPotential difference, voltage, is a force that will cause electrons (negative charges) to move if they can. Voltage is the motive power behind electron flow, and electron flow is the current. In a battery, we have voltage between (or across) the terminals from chemical energy inside. We don't have to have current flow to have the voltage. Some might think of voltage as "electrical pressure" because it is a force. That isn't a bad way to look at it. If we connect some wires and put a light bulb and a switch in series across the terminals of the battery, we have a circuit. If we close the switch, voltage, which was present all the time, will now cause electrons to flow through the wire and light the bulb. The battery has a positive terminal and a negative terminal. The positive terminal will take in electrons and the negative terminal will send them out. Current flows in only one direction. The potential difference created by the battery has energized the circuit and current flowed from the negative terminal of the battery, out through the circuit, and back to the positive one.
