How is mechanical energy converted to electrical

In summary, the conversation discusses the source of electrons in a hand cranked or hydrocarbon based generator. The expert explains that the generator does not create new electrons, but rather pushes existing ones along in the wires. Further explanation can be found on Wikipedia.
  • #1
ducktape
5
0
in, for example a hand cranked generator, or even a hydrocarbon based generator, when there is no ionisation/ oxidation-reduction going on to produce the electrons... where are they coming from? i know how such a generator is physically put togther, but where are the electrons coming?
 
Physics news on Phys.org
  • #2
The electrons that make up the current are in the wires all along. The generator doesn't "create" any new ones. It simply pushes them along.
 
  • #3
could you explain this more in depth(as in the jumping of the electrons from atoms orbitals)
 
  • #5
I love wikipedia. It is the answer to all questions.


edit:( i found wikipedia usefull)
 

1. How is mechanical energy converted to electrical energy?

Mechanical energy can be converted to electrical energy through the use of generators. These devices use the principle of electromagnetic induction, where a coil of wire is rotated in a magnetic field, causing the electrons in the wire to move and create an electric current.

2. What types of mechanical energy can be converted to electrical energy?

There are several types of mechanical energy that can be converted to electrical energy, including kinetic energy from moving objects, potential energy from stored forces, and thermal energy from heat sources. However, the most common method involves converting the mechanical energy of rotating turbines into electrical energy.

3. What are some examples of mechanical energy being converted to electrical energy?

Examples of mechanical energy being converted to electrical energy include hydroelectric power plants, where the kinetic energy of flowing water is used to rotate turbines; wind turbines, where the kinetic energy of wind is used to rotate blades; and steam turbines, where the thermal energy of steam is used to rotate turbines.

4. What is the role of magnets in converting mechanical energy to electrical energy?

Magnets play a crucial role in the conversion of mechanical energy to electrical energy. They create a magnetic field, which interacts with the moving coil of wire in a generator and induces an electric current. The strength of the magnetic field and the speed of rotation determine the amount of electrical energy produced.

5. Are there any inefficiencies in the conversion process from mechanical energy to electrical energy?

Yes, there are some inefficiencies in the conversion process. Some mechanical energy is lost as heat due to friction in the rotating parts of the generator. Additionally, not all of the mechanical energy can be converted to electrical energy due to the limitations of the generator design and the laws of thermodynamics.

Similar threads

Replies
14
Views
1K
Replies
1
Views
1K
Replies
3
Views
825
Replies
12
Views
4K
  • Beyond the Standard Models
Replies
6
Views
974
Replies
14
Views
2K
Replies
26
Views
3K
  • Electromagnetism
Replies
4
Views
1K
Replies
4
Views
1K
Replies
32
Views
644
Back
Top