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15 vocab words ch7
Chapter 7 Vocab
Question | Answer |
---|---|
charging by contact | transfer of eletric charge between objects objects in contacts. |
charging by induction | rearrange ment of electric charge in a object due to a near by eletric field. |
insulator | materialinin witch electric charges cannot move easily. |
conductor | material in which electric charges can move easily. |
static charge | imbalance of electric charge on an object |
elecriric discharge | movement of static charge from one place to another. |
magnetic domain | a group of atoms in a magnetic material with the magnetic poles of the atoms pointing in the same direction |
electric current | flow of electric charge , measured in amperes. |
electric circuit electromagnet | closed conducting loop in which electric current can flow continually. |
eletric resistance | measure of how difficult it is for electrons to flow in a material; unit is the ohm |
voltage | a measure of the amount of electrical potential energy transferred by an electric charge as it moves from one point to another in a circuit. |
series ciruit | circuit that has only one path for electric current to follow. |
parallel circuit | circuit has more then one path for electric current to follow. |
electromagnetic induction | production of electric current by moving a magnet and a wire coil relative to each other. |
electromagnet | a current carrying wire wrapped around an iron core. |