Electromagnetism
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Avg score: 88% • Most missed: “| Matter is not created nor destroyed in any chemical or physical change”
Electromagnetism
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25 Questions

1.
force that opposes the sliding motion between two touching surfaces

2.
a complete circuit through which electricity flows

3.
A region in which the magnetic fields of all atoms are lined up in the same direction

4.
Electric current

5.
Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second. Electric power is usually produced by electric generators, but can also be supplied by sources such as electric batteries. V = I × R

6.
a flow of electric charge unit:ampere

7.
A material that conducts electricity well

8.
The force of attraction or repulsion of magnetic materials

9.
the unit of voltage

10.
Current flows in one direction only (battery, dry cell)

11.
A buildup of charges on an object.

12.
When a negatively charged object touches a neutral object, both objects become negatively charged.

13.
a coil of wire with an electric current in it

14.
an incomplete electrical circuit in which no current flows

15.
Transferring electrons as they gather in a certain region (usually by polarization), without touching.

16.
a soft metal core made into a magnet by the passage of electric current through a coil surrounding it. wrapping the coil around an iron core.
adding more turns to the coil.
increasing the current flowing through the coil.

17.
A measure of power equal to one joule of work per second.

18.
A measure of the extra positive or negative particles that an object has.

19.
Current reverses its direction at regular intervals (car, house)

20.
Like poles repel; unlike poles attract.

21.
electrons

22.
an electromotive force or potential difference expressed in volts. unit: Volts

23.
the measure of the degree to which a conductor opposes an electric current through that conductor. unit:omhs

24.
A circuit that contains more than one path for current flow.

25.
Matter is not created nor destroyed in any chemical or physical change

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