Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Elec. & Magn.
Electricity and Magnetism
| Term | Definition |
|---|---|
| electric force | the attractive or repulsive interaction between any two charged objects |
| electrical insulator | material that cannot conduct electricity |
| conduction | when heat moves from one object to another through direct touch |
| coulomb | unit of electric charge |
| Coulomb’s law | the force of attraction or repulsion acting along a straight line between two electric charges is directly proportional to the product of the charges |
| semiconductor | a material that in some cases will conduct electricity but not in others |
| current electricity | an electrical charge in motion |
| potential difference | the amount of work per charge needed to move electric charge from the second point to the first |
| electric field | an electric property associated with each point in space when charge is present in any form |
| superconductor | conductive materials whose the resistivity abruptly decreases to zero as the temperature decreases below a critical temperature |
| current | the rate at which electrons flow past a point in a complete electrical circuit |
| volt | a unit for measuring the power of an electrical circuit |
| electric field lines | show how the electric field would push or pull a positive charge |
| static electricity | an unbalanced charge that is not moving |
| resistance | how difficult it is to move electrons through a circuit |
| Ohm’s Law | voltage equals resistance multiplied by current |
| electricity | the flow of tiny particles called protons and electrons |
| friction | the resistance of motion when one object rubs against another |
| voltage | the force that moves electrons through a circuit and is measured in volts |
| ohms | unit used to measure the electrical resistance of an electrical material or electrical device |
| electrical conductor | a material that can conduct electricity |
| induction | a charged object is brought near to but not touching a neutral conducting object |
| ampere | a unit of force for measuring electrical current |
| resistivity | a measure of how much a material opposed the flow of electric current |
| circuit | the path through which electricity is conducted |
| circuit diagram | graphical representation of an electrical circuit |
| parallel circuit | the current has more than one path for the electricity to flow |
| series circuit | all current is the same through each part or load |
| switch | a device used to make or break a connection in a circuit so you can turn power off and on to something |
| circuit breaker | a device designed to shut off a circuit when too much current is flowing |
| surge protector | a device that prevents an electrical surge from damaging electronic equipment |
| fuse | a device that shuts off the power to an electrical circuit when too much electrical power flows through it |
| bar magnet | a magnet in the shape of a bar with poles at its ends |
| magnetic field | the area around a magnet that has magnetic force |
| compass | a tool for finding direction that contains a small, thin magnet mounted on a pivot point |
| de-magnetize | remove magnetic properties from |
| magnetite | the most magnetic mineral on Earth |
| lines | shows the direction of a magnet's force and the strength of a magnet |
| lodestone | a rock that acts as a magnet and attracts iron |
| electromagnetic force | the force that causes an attraction between electrons and the positively charged nucleus |
| alternating current | an electric current of which magnitude and direction vary |
| electromagnet | a piece of iron encircled by a coil of wire through which an electric current is passed to magnetize the iron |
| direct current | the flow of electricity in a single direction, from the positive to the negative terminals |
Created by:
carla03
Popular Physics sets