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It is an oxidation/reduction reaction. Electrons flow from anode to cathode.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoThe battery provides the voltage; the voltage makes the current flow, as described by Ohm's law.
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What would happen if there was only positive electrodes in a circuit?
Nothing. The reason a circuit works is that there is an imbalance between the positive and negative (cathode and anode) ends of the battery. two positive ends wouldn't move anything.
Why can metals conduct electricity but remain unchanged?
Only the free valence electrons forming the electron "gas" move and as many move in as move out. Only metals form this electron "gas".
What is the difference between a series circuit and as parallel circuit?
series circuit can only move on one patha parallel circuit has two more paths for the electric carve to follow
How does a switching on and off can be done in a sequence of loght for example in a miniature lighting circuit we put in a marriage function?
switching on the tourch for example is when as you switch it on it will move the switch connecting it to a circuit that lights up the bulb and when you switch the switch off the switch will move breaking the circuit
What is difference between voltage and emf?
An electromotive force (e.m.f.) is the open-circuit, or no-load, potential difference provided by a source -such as a battery or generator. For a closed circuit, an e.m.f. is the sum of the voltage-drops around any closed loop, including the internal voltage drop of the source.A potential difference (voltage) can exist across any circuit component. For example, the fact that current is flowing through each of several resistors in a series circuit means that there must be an individual potential difference across each of those resistors (which we also term 'voltage drop').An electromotive force is the name we give to the open-circuit potential difference provided by a generator, battery, etc. For example, the open circuit potential difference of a battery would be its electromotive force.So, if we use a series resistive circuit as an example, the battery would provide the electromotive force, while voltage drops would then appear across its internal resistance, and across each of the resistances. The magnitude of the electromotive force is then equal (but acting in the opposite sense) to the sum of the voltage drops, including the internal voltage drop.Many textbooks use the symbol, E, to represent an electromotive force, and V to represent potential difference. So, Kirchhoff's Voltage Law, for example, will often be seen written as: E = V1 + V2 + V3 + etc.
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 cause electron in move in a circuit?
It is an oxidation/reduction reaction. Electrons flow from anode to cathode.
Describe how a battery causes electrons to move in a circuit?
The electrons don't actually move the electricity; the charge moves. The electrons slowly drift in the opposite direction from the charge.
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.
What supplies energy to move elecricity through a circuit?
A battery
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 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 is the time base of an oscilloscope?
This is the internal circuit that causes the horizontal movement of the electron beam across the screen of the oscilloscope. It can be adjusted to vary the time taken for the beam to move across the screen.
