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Because the metal in the wire is a conductor of electricity. The metal in wires is Cu (copper).
As it was told to me in my young apprentice days; all things are made up of atoms, all atoms, have electrons flowing around them, the number of electrons is determined on the element we are dealing with. Copper, for instance has 29 electrons flowing around in 4 fields, the outer field, IE furthest away from the centre has only one lone electron, which is very unstable due to its distance away from the nucleus (most, if not all good conductors of electricity such as platinum, gold, silver, and copper seem to have only one electron on its outer field).
Now, because that lone electron is so unstable, it is easy to push it on to another atom, but the next atom in the chain already has its 29 electrons and it just can't have 30. As Mr Scott would say "Ye canny change the laws of physics Jim", and he was right. So, it in turn has to get rid of the extra electron by push one of its own onto the next atom, and so on down the cable, producing a chain reaction which we call an electric current.
In theory, electricity actually flows from negative to positive, we got it back to front in the early days of discovery, but that's only a theory, the red (or brown) wire is the one that kicks.
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Answer #2:
A potential difference (voltage) between the ends of the wire does.
What else can I help you with?
What are electromagnets made from?
you get a magnetic maerial (mainly iron nail) and wrap copper wire around it and attach a baterie to the copper wire and there you have it, an electromagnet
In watt meter why pressure coil has more turn than current coil?
In an analog induction type wattmeter the pressure coil is connected accross the voltage source.It is intentionally made to have a larger number of turns than the current coil so that it's impedence increases and it draws minimum current from the circuit; causing lesser error in the reading.
What ia a ballast resistor made of?
A ballast resistor is typically made of ceramic or a special heat-resistant material. This material is chosen to withstand high temperatures generated by the electrical current passing through the resistor.
A fuse will melt if the?
A fuse is made with the material which offers high resistivity. When a large amount of electric current passes through the fuse, heat above the melting point of fuse is produced. Hence, the fuse melts.
How do you made coolingcoil for refgerators?
Cooling coils for refrigerators are typically made by winding a conductive tubing (such as copper) into a coil shape, which will carry the refrigerant. The coil is then attached to the refrigerator's system, and the refrigerant is circulated through the coil to absorb heat from the inside of the refrigerator and release it outside. The shape and size of the coil are designed to maximize heat transfer efficiency.
Can cast iron be made into an electromagnet?
Yes, cast iron can be made into an electromagnet by wrapping it with a coil of wire and passing an electric current through the wire. When the electric current flows through the coil, it creates a magnetic field in the cast iron, turning it into an electromagnet.
What is made by passing an electric current through coils of wire?
An electro magnet is created when a current is passed through a coil of wire. This effect is the main operation of how an electrical solenoid operates.
What is an electromagnet different from a magnet?
An electromagnet is made by passing an electric current through a coil of wire, which produces a magnetic field. The strength of the magnetic field can be controlled by adjusting the amount of current flowing through the wire. In contrast, a magnet is a material that produces a magnetic field naturally without the need for an electric current.
What controls the strength of a magnet made with electric current?
The strength of a magnet(electromagnet) made by flowing electric current through a conducting coil depends on magnitude of current. . .
What is made coiling wire around iron and passing an electric current through it?
Electromagnet.
What is the difference between a permanent magnet and an electromagnet?
A permanent magnet is made of material that naturally produces a magnetic field, while an electromagnet is created by passing an electric current through a coil of wire to generate a magnetic field.
Steps in making a galvanometer?
Wind a coil of wire around a bobbin to create the coil, which will serve as the moving element of the galvanometer. Attach a pointer or index needle to the coil to indicate the deflection caused by the current passing through the coil. Place the coil and pointer assembly within a magnetic field produced by a permanent magnet to allow for the deflection of the pointer in response to current flow. Connect the coil to a calibrated scale to measure the amount of current based on the deflection of the pointer.
Can heating devices be made by passing an electric current through a conductor of?
Nichrome wire works.
How does an electric heater coil work to generate heat in a heating system?
An electric heater coil works by passing an electric current through a resistive material, usually made of metal. The resistance in the material causes it to heat up, generating heat that warms the surrounding air in the heating system.
What are the 4 parts of an electromagnet?
The four essential parts of an electromagnet are the core (often made of iron), the coil of wire, a power source to provide electricity to the coil, and an electric current flowing through the coil.
Why is an electric current made when a magnet moves through a coil of wire?
When a magnet moves through a coil of wire, it induces a change in magnetic field within the coil, which in turn generates an electric current. This phenomenon is known as electromagnetic induction, discovered by Michael Faraday in the 19th century. The amount of current produced is directly proportional to the rate at which the magnetic field changes.
How is an electric magnet made?
An electromagnet can be made simply. When an electric current flows in a wire it creates a magnetic field around the wire. By winding the wire into a coil we can strengthen the magnetic field. Electromagnets are made from coils like this.
