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Potential difference is the difference in electric potential energy between two points in a circuit. It is measured in volts and represents the work done in moving a unit charge across the points. Electro motive force (EMF) is the energy per unit charge supplied by a source, like a battery or generator, to move charge around a circuit. It is also measured in volts and represents the energy input provided by the source.
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What force makes electrons move?
Electrons move in response to an electric force, which is generated by a difference in electric potential. This force causes electrons to flow from areas of high potential (positive) to areas of low potential (negative), creating an electric current.
What is used to measure how strongly the electrons in a wire are pushed?
Voltage is often referred to as Electro-Motive Force, or EMF. It is what causes current to flow in a conductor. Also called volt.
A difference between electric forces and gravitational forces is that electrical forces include?
Electrical forces include both attractive and repulsive interactions between charged particles, whereas gravitational forces are always attractive between objects with mass. Additionally, electric forces are much stronger than gravitational forces, but they have a shorter range.
What determine the direction of flow of charge?
The direction of flow of charge is determined by the electric field present in a circuit. Charge will flow from areas of higher potential energy to lower potential energy, following the direction of the electric field.
What two factors determine the potential energy of an elevated object?
The potential energy of an elevated object is determined by its height above the reference point and the force of gravity acting on it. The higher the object is lifted and the greater the force of gravity, the more potential energy it has.
What is the potential difference between two points in a circuit is called?
Voltage drop
What is the push behind the flow of electrons?
The force that causes electrons to flow is called the Potential Difference, and it is measured in Volts(V).
What is difference between electro motive force of a bettary and emf produced due to change in current in conductor?
workdone on unit postive charge by bettary is called electro motive force .it is not a force but traditionaly used as force to carrying charge from lower potential to higher potential. when current change in a coil then megnatic flux is change due to which emf is induced . this emf is a effect of changing current while electro motive force is a work donr by bettary to carry out the current in a wire
Is there any difference between the switching action of relays and contactors?
No, there is not any difference between the switching action of a relay and a contactor. Both of these devices are operated by an electro magnetic coil.
What is the operation of a volt?
A volt is a unit of electromotive force or potential difference between two points in an electrical circuit. It represents the push or pressure that moves electric charges through a circuit. It is used to measure the difference in electric potential energy between two points in a circuit.
What is counter electro-magnteic force?
It is also called back EMF. Back EMF is the electric potential difference that opposes the current that induces it. See related link below.
What is the difference between electro-light and non-electrolight?
wikipidea is a big help in our study because it can easily know our hardly word
What force makes electrons move?
Electrons move in response to an electric force, which is generated by a difference in electric potential. This force causes electrons to flow from areas of high potential (positive) to areas of low potential (negative), creating an electric current.
What is the difference between potential difference and voltage difference?
To specifically answer the question, there is no such thing as 'voltage difference' because, by definition, 'voltage' means 'potential difference' -not 'potential'!You can compare 'potential' with height, and 'potential difference' with the difference in height.The height of an object depends upon from where you measure it. For example an object three-quarters of the way up a 1000 m mountain is +750 m from the base of the mountain, but -250 m from the top of the mountain. Note how we apply a positive or a negative sign to indicate whether we are measuring upwards or downwards.The same applies to potential. It's value depends upon from where it is measured. For example, two charged objects could have a potential of , say, +5 V with respect to earth (ground) and a potential of -15 V with respect to earth. But the potential difference between them will be +5 - (-15) = 20 V.Notice how, in the above example, we always show a positive or negative sign when we talk about potential, but we don't use these signs when we talk about a potential difference. Furthermore, it is important that we must ALWAYS specify the reference point when we describe potential -e.g. "What is the potential at point A, with respect to (say) earth?"Taking this further. It's important to know that the term 'voltage' means 'potential difference', and not 'potential'! It would be quite wrong to say that the 'voltage of an object is (say) -200 V with respect to earth'. The correct expression would be the 'potentialof an object is -200 V with respect to earth'.
Why does cooper reacts with air to form oxide?
In chemical terms, the answer to the question "Why does copper oxidize?" is that the electro potential of copper is higher than that of oxygen. When a metal has an electro potential higher than oxygen, oxidization is a spontaneous reaction that occurs.
What is the difference bt current electricity and electro dynamics?
current electricity =battery , wire electro dynamics = motor , generator , speaker
Application of separately excited dc generators?
As a separate supply is required to excite field, the use is restricted to some special applications like electro-plating, electro-refining of materials etc. But what is the difference between self excited and separately excited?
