- #1
Air39
- 2
- 0
Please help me to understand what happens to an electron when its used in a closed circuit.
Main Question: How can electrons within a circuit perform work i.e. illuminate a light bulb or heat a stove and not be lost or changed from one state to another? How could it just stay the same and continue on unchanged in the circuit...??
To reiterate ...I will provide a couple examples that have led to my confusion:
a) To generate an electric current you can rotate a conductor i.e. copper within a magnetic field and produce electric current if its a closed loop. - From what i understand the electrons that are flowing are knocked free from the copper wire and simply flow in a circuit because of the difference in potential that has been generated by the magnetic field. However if the electrons are lighting a bulb or heating a stove...how does the "conservation of energy" not apply? how can you generate heat and light without a change in the state of the electron?
b) Photovoltaic panels - Let's say a photon from the sun knocks an electron free from the n type and transfers it to the p type creating a flow in electricity in the panel; then this flow of electrons is then stored in a battery. If the battery is detached from the system and drained, then reattached and charged...have electrons not been removed from the system? The more i ponder this...Perhaps its not the electron itself that is used but just the energy it carries?
What is actually happening to the electrons being used in a circuit? I have read lots of information and many forums on this concept and i can not get a clear answer.
Please no opinions just facts!
Thanks,
Air39
Main Question: How can electrons within a circuit perform work i.e. illuminate a light bulb or heat a stove and not be lost or changed from one state to another? How could it just stay the same and continue on unchanged in the circuit...??
To reiterate ...I will provide a couple examples that have led to my confusion:
a) To generate an electric current you can rotate a conductor i.e. copper within a magnetic field and produce electric current if its a closed loop. - From what i understand the electrons that are flowing are knocked free from the copper wire and simply flow in a circuit because of the difference in potential that has been generated by the magnetic field. However if the electrons are lighting a bulb or heating a stove...how does the "conservation of energy" not apply? how can you generate heat and light without a change in the state of the electron?
b) Photovoltaic panels - Let's say a photon from the sun knocks an electron free from the n type and transfers it to the p type creating a flow in electricity in the panel; then this flow of electrons is then stored in a battery. If the battery is detached from the system and drained, then reattached and charged...have electrons not been removed from the system? The more i ponder this...Perhaps its not the electron itself that is used but just the energy it carries?
What is actually happening to the electrons being used in a circuit? I have read lots of information and many forums on this concept and i can not get a clear answer.
Please no opinions just facts!
Thanks,
Air39