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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.
Wiki User
∙ 9y ago
Wiki User
∙ 11y agothere no diff...at all..it is all rubbish..
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Difference between electrical current and electrical charge?
current is the flow of charge.
What is the relationship between time charge and current?
Yes current = charge / time = I = Q/t
Difference between voltage and current?
Voltage is electrical potential, measure in derived units of volts, which is joules per coulomb. Current is electrical flow, measured in derived units of amperes, which is coulombs per second. Stated in other terms, voltage is energy per charge, while current is charge per time. That makes power, or watts, equal to energy per time, and that is joules per second.If you think of the water system analogy, volts is sort of similar to pounds per square inch (though not completely so), while amperes is similar to gallons per minute.AnswerVoltage is synonymous with 'potential difference' -not potential- measured in volts. Current is the flow of electrical charge, measured in amperes. The volt is an SI derived unit, wheras an ampere is an SI base unit.
What is the difference between elecrical and electronics?
in electronics we use DC current but in elctrical equipment we use AC current
What unit measures the force that makes electrons move in an electric current?
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.
The difference between charge and current?
Charge is potential, current is flowing.
Difference between electrical current and electrical charge?
current is the flow of charge.
What is the difference between current electricity and charge separation?
I have not found the answer to this question.
What is the difference between Current and Interference?
Current measures flow of charge. Interference is something that gets in the way.
What is the term for the potential difference in a charge between two points in current path?
capacitance
What is the term for the potential difference in a charge between two points current path?
capacitance
What is the term for the potential difference in a charge between two point in a current path?
voltage
Can potential difference ocur without current?
Yes. This is the build up of charge. The difference in charge, aka the potential difference, is the driving force that causes current to flow. The third law of thermodynamics is in action when the circuit is completed and the current flows between two point as a result of the potential difference between those two points. (p.s. I am an American girl)
What is the term for the term potential difference in a charge between two points in a current path?
voltage
What is the difference between power and current?
It's the difference between pressure and flow. The pressure is measured in volts, and the current in amps.Current is the flow of electrons.Power=VIcosϕV=voltageI=currentCosϕ=cosine of angle between V and IAnswerCurrent is a drift of electric charge, expressed in amperes. Power is the rate of doing work, expressed in watts (equivalent to a joule per second).
Difference between overcurrent relay and fuse?
Current is flow of electricity charge. Voltage is a measure of potential energy or charge. Fuse. Is a device that opens when the current rating is exceeded this stopping the flow of current.
Is it true for an electric current to flow only if two objects have a different charge?
Only if there is a potential difference between two points, does the charge move specifically in a direction.
