Physical Science Chapter 6 Electricity
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27 terms
Terms | Definitions |
|---|---|
 Electrostatic Charge | accumulated electric charge not moving |
| Electrical Conductors | materials which easily allow charges to flow through them metals, water |
| Coulomb | the unit for electrical charge. |
| Fundamental Charge | Smallest measured electric charge, belonging to an electron. -1.6 X 10⁻(19)C |
| Coulomb's Law | electric force between charged objects depends on the distance between the objects and the magnitude of the charges. F=K(q1q2/d^2) |
| Force Field | This exists in the space surrounding a mass electric charge, or magnet, so that another mass, electric charge, or magnet introduced to this region will experience a force. |
| Electric Field | The field around charged particles that exerts a force on other charged particles. |
| Volt | a measure of potential difference between two points. |
| Electric Circuit | an electrical device that provides a path for electrical current to flow. |
| Ampere or Amp (A) | Rate of current flow (1 Amp= 1 Coulomb/second) |
| Direct Current (dc) | a flow of electric charge in only one direction |
| Alternating Current (ac) | a continuous back and forth movement of electrons in a circuit |
| Electrical Resistance (R) | Materials that have a property of opposing or reducing a current. |
| Ohm's Law | V=IxR (V=voltage, I=current, R=Resistance) |
| Ohm | The ratio of vols/amps is the unit of resistance called. |
| Watt (W) | the SI unit of measurement of power; equivalent to Joule/second. |
| Magnetic Poles | the ends of a magnetic object, where the magnetic force is strongest |
| Magnetic Field | the lines of force surrounding a permanent magnet or a moving charged particle |
| Magnetic Domain | a region in which the magnetic fields of all atoms are lined up in the same direction |
| Electromagnet | a temporary magnet made by passing electric current through a wire coiled around an iron bar |
| Electromagnetic Induction | Process by which electrical current is induced in a wire when it is moved through a magnetic field |
| Electric Generator | a device that transforms mechanical energy into electrical energy |
| Transformer | a device that increases or decreases the voltage of alternating current |
| Series Circuit | a circuit in which the objects are connected in a single path |
| Parallel Circuit | a closed circuit in which the current divides into two or more paths before recombining to complete the circuit |
| Short Circuit | accidental contact between two points in an electric circuit that have a potential difference |
| Electric Current | a flow of electricity through a conductor |
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