banner



Home  ›  What Is The Change Of A Single Electron As It Moves Through The Light Bulb

What Is The Change Of A Single Electron As It Moves Through The Light Bulb

Written By Thursday, June 16, 2022 Add Comment Edit

Well-nigh recent reply: ten/01/2016

Q:

If V=IR so how is current the aforementioned everywhere? Shouldn't the electric current decrease when information technology passes through a bulb in a serial circuit?( Due to a decrease in voltage? )
- Mina (historic period sixteen)
Kuwait

A:

Hello Mina,

First, what is current? Electric current is comprised of electrons moving through an electrical field from a high electrical potential to a lower potential. For the electric current to decrease then, something would need to happen to the electrons that go into the low-cal seedling.  If 1 electron goes into the light bulb, then at the end of everything I need to still have one electron someplace. So how do electrons passing through the bulb make light?

Incandescent light bulbs have a small filament which when heated begins to glow and emit calorie-free.  The reason the filament heats up is because it has a high resistance, which means that every bit electrons move through the filament, they lose a lot of free energy.  You tin can think of it as walking on a sidewalk compared to walking in waist deep water.  A wire is similar a sidewalk. Information technology has some resistance, only it is so tiny that it can generally be ignored which is why wires are useful in electronic circuits. The high resistance of the light bulb is like trying to walk through waist deep water.  Here free energy is being taken from the electrons because of the interactions with the atoms in filament which causes those atoms to heat up, which in plough makes them emit light.

The lite bulb is not doing annihilation to the electrons, and then we wait then that any electrons going into the bulb should come out the other side. Since current is merely flowing electrons, current stays the same.

Since current is the same on both sides, we know that the electrons are all moving together. Think of it like beingness in a big loop of people. Since anybody is in a large line yous could imagine that you could only move as fast every bit the slowest person in the line. If everyone is on a big loop of sidewalk so everyone could run around in a circumvolve. This is similar having a large current in a loop of wire, or what we phone call a short. To put the equivalent of a lightbulb into our homo excursion, imagine that i section of the sidewalk dips into a pool of h2o. At present everyone is stuck going every bit fast every bit the people trudging through the h2o. This is why current everywhere in a circuit is smaller when a resistor is introduced. Every bit people trudge through the water they have to work hard to go through the water and they utilize energy.  In a excursion, this free energy comes from the voltage source, similar a battery.  The battery loses free energy considering it has to "pull" the electrons through the high resistance, and this is why the voltage drops across the light bulb.

-Sheldon S

(published on ten/01/2016)

Follow-up on this reply.

Source: https://van.physics.illinois.edu/qa/listing.php?id=43723&t=why-current-into-a-bulb-is-the-same-coming-out

Posted by: truesdalehimat1991.blogspot.com

0 Response to "What Is The Change Of A Single Electron As It Moves Through The Light Bulb"

Post a Comment

Subscribe to: Post Comments (Atom)

Iklan Atas Artikel

Iklan Tengah Artikel 1

Iklan Tengah Artikel 2

Iklan Bawah Artikel