Comments by "Zach B" (@zachb1706) on "The Big Misconception About Electricity" video.

  1. A bit over 1s as the current propagates at just under the speed of light
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  2. Wireless energy uses electromagnets to transport charge. Just like a charge running through a wire creates a magnetic field, a changing magnetic field can induce a charge. Teslas innovation was to tie the changes in magnetic fields to a resonant frequency. The problem was, there was absolutely no use for teslas technology at the time.
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  3.  @rosstemple7617  the electrons are oscillating back and forth due to the electric field. These electrons collide with the protons in the light bulb filament, transferring energy to the protons. This occurs many millions of times a second, causing the filament to heat up and produce light. Yes, the bulb does use up some of the energy of the electric field, but it’s being maintained by the battery.
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  4. How does a battery work? You will need to understand redox reactions (reactions that involve the exchange of electrons). Essentially you have two “half cells”. One “half-cell” contains a reactant that will lose electrons (oxidation) and the other contains a reactant that will gain electrons (reduction). The two half cells are connected by a salt bridge. Nothing happens yet. But if you attach the wires to the terminals (each terminal only connects to one of the half cells) we get a complete circuit. The potential difference between the cells induced a current that will propagate through the wire. That’s a simple look at it, if you want to know more look up “galvanic cells”
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  5. I’d there just a magnetic field sitting there hovering around the battery? No. A magnetic field is only induced if current flows through the wire.
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  6. Why is it connected to the terminals? 1) the sides of the battery are insulated. 2) as explained in my explanation of batteries, batteries are made up of two half cells. They must be separated, and it’s simply a design choice that the terminals are the only places you can connect to
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  7. Why don’t they start fires? They do if you puncture them. The reactants are no longer separated which could be hazardous
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  8. Waxes are interesting things. The medium only needs to move a few cm back and forth but the energy can be transmitting at the speed of light
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  9. What is with this sentiment? It’s always idiots who don’t understand a thing about electricity that believe that Teslas work was both unbelievably brilliant and lost forever.
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  10. Because there is no physical place for the electrons to move. The electrons need to be able to move to transmit the current, though the current travels faster than the electrons because it’s a wave.
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  11. You are missing the crucial thing: electricity can travel through air. That’s why it’s 1/c. Sure, it would be a tiny amount that would barely light up the bulb, but it still would.
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  12. There would still be an electric field in the wire
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  13.  @dmitryloshkov1372  yes there is or no electric circuit would be created.
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  14. The power station sends out AC because it’s more efficient to transport over long range.
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  15. Huh?
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  16.  @rosstemple7617  what do you mean by “dead space”?
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  17. Less resistance means greater current, so yeah the electrons will physically move faster through the wire. However the current will still propagate at the speed of light
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