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unit 9 electricity
| Question | Answer |
|---|---|
| Used to measure the current in an electrical circuit. | Ammeter |
| Standard unit for current. | Ampere |
| An example of a potential difference source. | Battery |
| The structures that provide closed paths through which electricity travels. | Circuit |
| A safety device for an electrical circuit that causes a switch to open a circuit,If it overheats to the point that the metal within it bends or warps.Protects multiple devices at the same time and can be reused. | Circuit breaker |
| The ease with which rearrangement(induction) happens in a material. | Conductivity |
| Material that rearranges it's electrons well.(metal,water) | Conductor |
| Flow of electric charge in a closed circuit.(actually number of electrons involved) | Current |
| Object that transforms electrical energy in a circuit to work.(lightbulb,motor) | Device |
| Brief flow of electrons from a charged object to the rearranged object. | Discharge |
| Uses chemical reactions in a dry paste to make electrons.; Ex.:Duracell, Eveready | Dry cell |
| A drawing of an electrical circuit using symbols. | Electrical Diagram |
| The force that charged materials or objects exert on each other. | Electrical force |
| Flow of electric current in a circuit. | Electricity |
| An instrument that is used to detect electrical charge. | Electroscope |
| A single-use safety device that causes a break in a circuit if it begins to overheat. Uses a metal that completely melts. Cannot reuse. | Fuse |
| A machine used to produce high amounts of voltage. This is the way that the energy from wall sockets is created. | Generator |
| A circuit which is divided into different "branches" for current to flow. Devices do not have to share the energy, and if one fails, the other DOESN'T. | In-Parallel Circuit |
| Circuit in which the current has only one path. More than one device has to share the energy, and if one fails, so do the others. (open circuit) | In-Series Circuit |
| Type of material where it is difficult for it rearrange its electrons (plastic, styrofoam, rubber) | Insulator |
| Standard unit for resistance in a circuit. | Ohm |
| Used to measure the amount of resistance in a component of an electrical circuit. | Ohmmeter |
| The amount of potential energy that each electrical charge has. In other words, the electrical energy available. A comparison of the # of electrons in one location to another location, but NOT the actual # of electrons involved! | Potential Difference |
| The measure of an object's ability to conduct electricity. High resistance means low conductivity. It stands for how much the material restricts the flow of electrons. | Resistance |
| A device in a circuit that "uses up" excess energy not needed by a device. | Resistor |
| A path in an electrical circuit which has zero to low resistance. | Short circuit |
| A buildup of either postive or negative charge; consists of isolated motionless charges, like those produced by friction. | Static electricity |
| Used to open or close a circuit, depending on its position. | Switch |
| Standard unit for potential difference. | Volt |
| Another name for potential difference. | Voltage |
| Used to measure the voltage in an electrical circuit. | Voltmeter |
| Uses chemical reactions between an acid and water to make negative charges (electrons.) Ex: car battery | Wet cell |
Created by:
Renarougethefox
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