How is the mechanical energy of a generator transformed into electrical energy?

In summary, a coil of wire is moved through a magnetic field, which causes a current to flow through the wire. This current is what creates the electricity in the wire.
  • #1
stickythighs
37
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I always thought that an electrode is what transforms the mechanical energy of a generator into electrical energy.

In a children's book about technology that I was reading yesterday, I saw something that has confused me. The book seemed to imply that the movement of a the wires of a coil through a magnetic field created or increased the electricity in the wires. It makes sense to me that the movement of wires through a magnetic field could increase the power of the electricity, but I don't understand how the movement of wires through a magnetic field could create electricity in the first place if there was no electricity in the wires before.

How is the mechanical energy of a generator transformed into electrical energy?
 
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  • #2
stickythighs said:
I always thought that an electrode is what transforms the mechanical energy of a generator into electrical energy.

In a children's book about technology that I was reading yesterday, I saw something that has confused me. The book seemed to imply that the movement of a the wires of a coil through a magnetic field created or increased the electricity in the wires.
That book you read has it right. Moving a wire through a magnetic field drives a current.
...but I don't understand how the movement of wires through a magnetic field could create electricity in the first place if there was no electricity in the wires before.
The wires are filled with electrons just sitting there waiting to be moved.
 
  • #3
russ_watters said:
That book you read has it right. Moving a wire through a magnetic field drives a current.

Most people would have just said that and left it at that, and I would still be confused.


russ_watters said:
The wires are filled with electrons just sitting there waiting to be moved.

Aha! Now I understand. I needed someone to explain it on the atomic level like you did. I appreciate it.
 

1. How does a generator produce electricity?

A generator produces electricity by converting mechanical energy into electrical energy through the use of electromagnetic induction. This process involves rotating a coil of wire within a magnetic field, which creates an electric current.

2. What is the source of the mechanical energy in a generator?

The source of mechanical energy in a generator can vary depending on the type of generator, but it is typically provided by an external force such as a turbine, engine, or hand crank. This force is used to rotate the coil of wire within the magnetic field.

3. What is the role of the magnetic field in a generator?

The magnetic field in a generator is essential for the process of electromagnetic induction. It provides the necessary force to move the electrons in the wire and create an electric current. The strength of the magnetic field can also affect the amount of electricity produced.

4. How is the electrical energy from a generator used?

The electrical energy produced by a generator can be used in a variety of ways, depending on the specific application. It can be used to power homes and businesses, as well as to provide electricity for electronic devices and appliances. It can also be converted into other forms of energy, such as heat or light.

5. What factors can affect the efficiency of a generator?

The efficiency of a generator can be affected by several factors, including the type and design of the generator, the strength of the magnetic field, and the speed at which the coil is rotated. Additionally, external factors such as temperature and friction can also impact the efficiency of a generator.

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