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unit 3 sect. 1-4
Term | Definition |
---|---|
electric charge | a property that leads to electromagnetic interactions between particles that make up matter |
static electricity | the buildup of electric charge on an object |
electrical conductor | a material through which charges can move freely |
electrical insulator | a material through which charges cannot move easily |
semiconductor | a special class of materials that conduct electric charge better than electrical insulators but not as well as electrical conductors |
electric current | the rate of flow of electric charges |
voltage | the amount of work required to move each unit of charge between two pionts |
resistance | the opposition to flow of electric charge |
electric circuit | a complete closed path through which electric charges can flow |
series circuit | circuit in which all parts are connected in a row that forms one path for electric charges to follow |
parallel circuit | circuit in which electric charges have more than one path that they can follow |
magnet | any material that attracts iron or materials containing iron |
magnetic force | the force of attraction or repulsion generated by moving or spinning electric charges |
magnetic pole | one of two points, such as the ends of the magnet |
magnetic field | a region where a magnetic force can be detected |
electromagnetism | the interaction between electricity and magnetism |
electromagnet | a coil that has a soft iron core and that acts as a magnet when an electric current is in the coil |