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electricity

Andrew M Inglés 11 fichas

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1electrons flow in one directiondirect current,
batteries
2pushes the electrons back and forth, changing the direction of the flow several times per secondAC alternating current, lights in house
3The transfer of electrical energy through a conductorhappens at nearly the speed of light
4Increasing the current through a wire:causes the magnetic field around the wire to increase
5A ferromagnetic core:increases the strength of an electromagnet because it contains magnetic domains that align under the influence of a magnetic field
6The strength of an electromagnet can be:increased by adding a ferromagnetic core
7All magnetic fields are created bymoving electric charges
8a magnetic field exerts a force on a charged particle:that is perpendicular to both the magnetic field and the particle's direction of travel.
9Adding a light bulb to a series circuit willincrease the total resistance cuz it has to go thru it, you add it up
10Adding a light bulb to a parallel circuit will:decrease the total resistance
11The total current through a parallel circuit:increases if more light bulbs are added to the circuit