0
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 else can I help you with?
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
What is the stream of electricity?
The stream of electricity refers to the flow of electric charge, typically carried by electrons, through a conductor such as a wire. This flow can occur in two forms: direct current (DC), where the charge moves in one direction, and alternating current (AC), where the charge changes direction periodically. The movement of these charges creates an electric current, which powers devices and systems in our everyday lives. The flow is driven by a difference in electric potential, or voltage, between two points.
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
Difference between electrical current and electrical charge?
current is the flow of charge.
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 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 point in a current path?
voltage
What is the term for the potential difference in a charge between two points current path?
capacitance
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)
When is current produced?
Electric current is produced when there is a flow of electric charge in a circuit. This flow of charge is typically generated by a voltage source, such as a battery or power supply, which creates a potential difference that pushes the electrical charge around the circuit.
What constitutes an electric current in a wire?
An electric current in a wire is the flow of electric charge, typically carried by electrons, through the wire. This flow of charge is driven by a voltage difference, or potential difference, between two points in the wire.
Is it true for an electric current to flow only if two objects have a different charge?
No, electric current flows due to the movement of charged particles, usually electrons. Two objects with the same charge can still have current flow between them if there is a potential difference (voltage) present.
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.
