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What unit measures the force that makes electrons move in an electric current?
Wiki User
∙ 13y ago
The force that makes electrons move is a voltage, or potential difference and both are measured in Volts. When electrons move, the rate of movement is current, measured in Amps. The amount of current is dependant on both the resistance in a circuit and the voltage. The higher the resistance, the lower the current. The higher the voltage, the greater the current.
The symbol for voltage is "V" and confusingly, the symbol for current is "I". The unit of resistance is the Ohm with the symbol "R" or the Greek symbol for omega.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoThe voltage i.e. a difference in charge concentration. The electrons are repelled from a negative charge density and are attracted to a positive charge density
Wiki User
∙ 13y agoA: ELECTRICITY really means electron flow which can only occurs when there is a force present causing electrons to leave its orbit by this force
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How does an electric current flow?
The very word current means 'flow'. Electric current is the flow of electric charges. There are two kind of electric charges. Scientists considered the electric current as the flow of positive charges. But in case of solid metals, only negatively charged electrons are able to move freely where as the positively charged protons are held firmly within the core of the atoms. So electric current is due to negatively charged electrons. Now we have to differentiate these two. How? Let us consider the current due to flow of positive charges as conventional current flow. Hence conventional current direction is always opposite to the direction of flow of electrons. To keep the charges in motion we need a force to push them. So we use a chemical cell which has electrical potential difference between the two terminals. This potential difference is named as " electro motive force", in short "emf". So emf is responsible to make electric charges to flow.
What are 3 factors which affect the magnitude of magnetic force on current-carrying conductors?
Electric current, magnetic field intensity, length of the conductor, angle between the electric current and magnetic field
In an electric circuit what provides the push?
You could consider the Voltage as the pushing force in a circuit. It drives the current.
What is the difference between charge and current?
An electric charge can be either negative or positive. The smallest quantity of negative charge is the amount represented by one electron, and this is exactly equal to the amount of positive charge represented by one proton. In practice, charge is measured in coulombs (C). Normally, atoms have identical numbers of protons and electrons, so atoms are normally neutral. Atoms that are charged are called 'ions'. A 'positive ion' has an overall positive charge, which means it has more protons than electrons. A 'negative ion' has an overall negative charge, which means it has more electrons than protons. 'Free electons' are negatively-charged sub-atomic particles that have become detached from an atom. Most metals have an abundance of free electrons, and it is a drift of these free electrons that constitute an electric current. In electrolytes (conducting fluids) a current is usually a movement of positive or negative ions. In both cases, an electric current is a drift of electrical charge. An electric current is measured in amperes (A). The ampere is an SI base unit, and defined in terms of the force between parallel, current-carrying conductors, due to their magnetic fields. A coulomb is an SI derived unit, defined in terms of current and time, as an ampere second.
What is a current in a circuit measured in?
ampsAnswerElectric current is measured by means of an ammeter. Electric current is expressed in amperes (symbol: A), which is defined in terms of the magnetic effect of an electric current -i.e. the force between two, parallel, current-carrying conductors.
Can moving electrons through a magnetic field can produce an electric current?
Electrons moving is an electric current. An electric current moving at an angle to a magnetic field will produce a Force.
What is definition of electric current?
Current is the motion of electrons in a conductor being propelled by electromotive force (voltage).
What is an electical current?
Electric current is simply the flow of free electrons in a conductor. It is usually defined as the rate of charge flow, because the free electrons represent an electric charge.
What is the driving force which causes electrons to flow through conductors called?
That force is called an 'electric current'.
What happens before electric current is created?
An electric current is the result of a voltage. Considering the individual charged particles (often these are electrons), they must be subjected to electric forces - for typically an attractive force to one side, and a repulsive force to the other.
Which is true electric current running along a wire can be used to produce magnetic force or moving electrons through a magnetic field can produce an electric current?
They're both true, but I'm not comfortable with the way they're stated. I would have said: -- Electric current through a wire produces magnetic force. -- Moving electrons constitute an electric current, whether or not they're moing througha magnetic field.
What causes electrons to move through a wire as a current?
A voltage, which is related to a change in an electric field.
What is the force that causes electrons to move in a conductor?
A charge is transferred (coulombs) and this amounts to an electric current (amps)
Is an electric current the movement of negative charges called electrons?
The force moving electrons in electricity is called resistance. The electrons move toward a path of least resistance. The current is the actual movement of the electrons in a specific direction.
What is the magnetising force?
its a force that moves by electric current
Which force is contain in between nucleus and electrons?
Protons are +1 charged and electrons are -1 charged. This is an electric force
What is the electric force that makes current flow in a circuit is related to is?
The electric force that makes current flow in a circuit is related to the resistance.
