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unit 9 electricity

QuestionAnswer
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