#physicsquestion

[@danstark462]

Like your motor. Cool. Great science fair demo.

[@ja.935g67]

Excellent explanation

[@davidhenderson3400]

And that is where the LRA rating on a motor comes from.

[@Zuckerpuppekopf]

This is why you will rapidly drain your battery when electric tools, or electric lawn mower, are stalled out frequently by over-pressure (frictional resistance). You never want to hear an electric motor start to lug because it usually means you are in the process of blowing away a quarter to half of your battery's charge. Another KZbin video comparing electric chain saws made this mistake: the influencer started pushing hard on the saw to make it go faster, causing the chain speed to slow, and he later complained that brand's battery life was low. No...the influencer simply mishandled the electric tool.

[@genebodjtb]

it like electical inertia... it is easier to push an already moving object verses a static on... also the friction is lower on moving objects than static ones

[@eugenepluta1462]

Am I the only one that is now totally confused?

[@JustinRuth-km4wz]

The load of the current is less because the load is off and on. ....

[@klmkt4339]

That's why overload wet grinder gets burnt

[@AaABbB-sg5cr]

if u have a PSC multispeed motor, u can measure ohm between neutral and other speed wires. The smallest ohm number should be the fastest speed, shouldnt be 0L or flat 0 ohm tho.

[@rorymacintosh6691]

Nice!

[@robertsmith2956]

The wire is only there for 1 degree. the other 359 degrees it doesn't let current through.

[@mavamQ]

Which end of your body did you pull those numbers out of? Just kidding, I already know.

[@ReinoTrillana]

why he didnt show a whole picture of coil maybe fan were connected,?

[@sillybilly686]

You mean stalled not stopped?

[@ja.935g67]

So that's why a car electrical system bogs down a bit when a radiator or a AC fan kicks on 🤔 hmmm

[@AdamHowellProvo]

A stopped electrical motor turns the coil into a short. When it is spinning the electricity through the coil generates a magnetic field which produces resistance. That's the reason why it draws more current when stopped.

[@deang5622]

No this is not correct. When the coil is moving a back EMF is produced according to a combination of Faraday's and Lenz's Laws as determined by this equation: e =-Ldϕ/dt If there is no rotation then the back EMF e is zero. This is because the dϕ/dt element is zero. -Lx0 = 0. Hence, e is 0. The circuit reduces to simply: a simple circuit comprising the voltage supply, the resistance of the coil. The coil resistance is low and with nothing to reduce the magnitude of the voltage, the maximum current flows, which is determined by: I = V/R where V is the supply voltage, and R is the resistance of the coil. The magnetic field does not produce resistance. That is not possible.

[@AdamHowellProvo]

@deang5622 Nothing I said was wrong, it just wasn't complete. I was trying to make it succinct and expected the reader to understand it is more complicated.

[@deang5622]

@@AdamHowellProvo You said the coil generates a magnetic field which produces resistance. This is false. It is not correct. I am not going to argue with you. Just accept it. I provided the mathematical formula to explain what actually happens. If you have trouble understanding it, then go research it. I provided the name of the theory.

[@onradioactivewaves]

The electric current through the coil generates a magnetic field regardless if it is spinning or not.

[@AdamHowellProvo]

@@deang5622 the coil produces a magnetic field. That field with something (usually a stationary magnet) which produces the motion. That interaction is resistance. Like I said, I was trying to be succinct.

[@oddballdynamics.9658]

I sto