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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.
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What distinguishes a compound like copper sulfide from an ordinary mixture of copper powder and sulfur?
Copper Sulfide is a wholly different chemical from copper and sulfur, and thus shows different characteristics and is not dividable by physical means, while a mixture of copper and sulfur powder is just a physical mix.
Describe how a simple generator produces electric energy?
A copper wire coil is rotated at speed in a magnetic field, to cause electrons to move. This is the electric current. The stronger the magnets and/or thicker the copper coil, the more current is produced
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 dropping a magnet down a copper tube produce a current in the tube?
When a magnet is dropped down a copper tube, it moves through the magnetic field created by the magnet. According to Faraday's law of electromagnetic induction, the changing magnetic field around the magnet induces an electromotive force (EMF) in the conductive copper tube. This induced EMF generates an electric current within the tube as the magnet falls, resulting in the current flowing in a direction that opposes the change in magnetic flux, as described by Lenz's law. The interaction between the magnet and the induced current can also cause the magnet to fall more slowly due to magnetic damping.
Can copper mined straight from the ground be more valuable before its refined?
Copper can be found to contain more valuable metal within it, thus making it a bit more valuable.
What distinguishes a compound like copper sulfide from an ordinary mixture of copper powder and sulfur?
Copper Sulfide is a wholly different chemical from copper and sulfur, and thus shows different characteristics and is not dividable by physical means, while a mixture of copper and sulfur powder is just a physical mix.
Describe how a simple generator produces electric energy?
A copper wire coil is rotated at speed in a magnetic field, to cause electrons to move. This is the electric current. The stronger the magnets and/or thicker the copper coil, the more current is produced
When a magnet is dropped inside a copper tube its exit is delayed by a few minutes why?
This effect has nothing to do with the magnet sticking to the side of the copper. Magnets will only stick to ferromagnetic substances such as iron and steel, not copper. The actual physics of this experiment is more subtle. The magnet falling down the tube results in a changing magnetic field within the copper tube. This changing magnetic field produces a current within the tube. That current creates a new magnetic field within the tube which slows down the magnet.
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 much copper is recycled per year in the UK?
41% of the demand for copper within Europe is supplied from recycled copper.
Experiment on how to purify copper by electrolysis?
To purify copper by electrolysis, dissolve impure copper in a sulfuric acid solution. Place pure copper as the cathode and impure copper as the anode in the electrolytic cell. Apply a direct current to the electrodes. The impure copper will dissolve into the solution and deposit onto the pure copper cathode, producing purified copper.
What is a condition that can differ within an experiment?
variable
How can a simple electromagnet be created?
A simple electromagnet can be created by winding a coil of wire around an iron core and passing an electric current through the wire. The current generates a magnetic field within the coil, magnetizing the iron core. This setup creates a temporary magnet that can attract magnetic materials.
Solid copper wire is a good conductor because?
The outermost shell of electrons in a copper atom is not bound to the individual atom (nucleus), but can move freely within the copper. So when attracted by a positive voltage, electrons can move toward it.
Explain why do copper and iron conduct electricity?
Copper and iron conduct electricity due to the presence of free electrons in their atomic structure. These free electrons can move freely within the material, allowing for the flow of electric current. This property makes copper and iron good conductors of electricity.
Is copper pipe magnetic?
No, there are only 3 elements which can be magnetized: iron, cobalt and nickel
How Does dropping a magnet down a copper tube produce a current in the tube?
When a magnet is dropped down a copper tube, it moves through the magnetic field created by the magnet. According to Faraday's law of electromagnetic induction, the changing magnetic field around the magnet induces an electromotive force (EMF) in the conductive copper tube. This induced EMF generates an electric current within the tube as the magnet falls, resulting in the current flowing in a direction that opposes the change in magnetic flux, as described by Lenz's law. The interaction between the magnet and the induced current can also cause the magnet to fall more slowly due to magnetic damping.
