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current flow in wire means electron move.when is conduct the electron move for the first positive cycle from 180 phase.then for negative half cycle it will move backward
it means electron stay its position on both cycle just external force is applied to make the device operate and electron which are in wire.
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FranCurrent flows in copper wire due to the movement of electrons. When a voltage is applied across the wire, the free electrons in the copper atoms gain energy and move in the direction of the electric field, creating an electric current. The high conductivity of copper allows for efficient flow of electrons through the wire.
Your question should really be asking what is the charge(in this case, electrons) velocity through a copper conductor.
The velocity of the electron drift in a conductor is given by:
v = I/(n A e)
where:
- v = velocity (metres per second)
- I = current (amperes)
- n = number of electrons per cubic metre (8.5 x 1028 for copper)
- A = cross-sectional area of conductor (square metres)
- e =charge on a single electron (coulombs)
If you plug practical values into this equation, you will find that the velocity of electron drift will be a fraction of a millimetre per second -in other words, it is VERY slow! For example, it's unlikely that an individual electron will pass along the length of a flashlight filament before its battery becomes depleted!
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If a copper wire in a working electric circuit is replaced by a piece of rubber tubing will there be a current in the circuit?
No, a rubber tubing is an insulator and will not allow the flow of electric current like a conductor such as copper wire would. Therefore, if the copper wire is replaced by rubber tubing, the circuit will be broken and no current will flow.
What is the predominant carrier of electrical charge in a copper wire?
The predominant carrier of electrical charge in a copper wire is the free electrons within the copper atoms. These free electrons are able to move easily through the lattice structure of the copper, allowing for the flow of electric current.
How does the flow of current within the simple cell differ from that in a copper wire?
One terminal of a cell or battery is positive, while the other is negative. It is convenient to think of current as flowing from positive to negative. This is called conventional current. Current arrows in circuit diagrams always point in the conventional direction. However, you should be aware that this is the direction of flow for a positively-chargedparticle.In a copper wire, the charge carriers are electrons. Electrons are negatively-charged and therefore flow from negative to positive. This means that electron flow is opposite in direction to conventional current.
Will a copper wire not carrying a current be attracted to a magnet?
No, a copper wire that is not carrying a current will not be attracted to a magnet. Copper is not a magnetic material, so it does not interact with magnetic fields in the same way that magnetic materials like iron or nickel do.
What does copper wire do in an electrical circuit?
Because the metal Copper is a very good conductor - of both electricity and heat - copper wire can be used to carry an electric current in an electric circuit. The electric current consists of a flow of electrons.
