Chapter 2 Electric Charges and Current
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| electric field | the electric force that extends from every charged particle
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| static electricity | the buildup of charges on an object
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| friction | the transfer of electrons from one object to another by rubbing
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| conduction | the transfer of electrons from a charged object to another by direct contact
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| induction | the movement of electrons to one part of an object by the electric field of another object
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| static discharge | the loss of static electricity as electric charges move off an object
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| electroscope | an instrument that can detect the presence of electric charges, but cannot determine the type of charge
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| electrical potential | the potential energy per unit of electric charge
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| potential difference | the difference in electrical potential between two places
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| voltage | the unit of measure of potential difference
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| voltage source | creates a potential difference in an electric circuit; batteries and generators
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| electrical resistence | the opposition to the flow of charges
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| voltmeter | a device that measures potential difference or voltage
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| ammeter | a device that measures current
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| Ohm's Law | a conductor or any other device that has a constant resistance regardless of the voltage
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| series circuit | all the parts of the circuit are connected one after another; only one path for electricity to follow
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| parallel circuit | different parts of the circuit are on separate branches; more than one path for current to take
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| short circuit | a connection that allows current to take an unintended path
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| third prong | a round prong of a plug that connects the metal shell of an appliance to the ground wire of a building
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| grounded | electrical systems lead charges from a circuit into the ground
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| lightning rod | a metal rod mounted on a building in order to protect a building from lightning
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| fuse | a device that contains a thin strip of metal that will melt if too much current flows through it
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| circuit breaker | a safety device that uses an electromagnet to shut off the circuit when the current gets too high
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| conservation of charge | electrons are transferred from one location to another; charges are not created or destroyed
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Dcoleman
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