# Electric Circuits Flashcards

Terms Definitions
 Wire Yes. ... wire Series Circuit ohm's law applies Watts SI unit for power repel to thrust back or away. different types of current have different ... uses series connected end-to-end, forming a single path for electron flow. electric field force field surrounding charged particle within which another charged particle experiences force Circuit Any complete path along which charge can flow. parallel circuit An electric circuit with multiple paths insulator a material of such low conductivity that the flow of current through it is negligible. In parallel Term applied to portions of an electric circuit that are connected at two points and provide alternative paths for the current between those two points. current the flow of electricity through a wire or other conductor static electricity a stationary electric charge built up on an insulating material. filament the wire that gives off light in a light bulb In a parallel circuit, if one bulb goes out the other bulbs will____. stay lit a current is created in electric cell a chemical reaction (acid+metal) Equivalent Resistance (Parallel) 1/Rp = 1/R1 + 1/R2 + ... Rp < R(individual) - increase in pathways, decrease in equivalent resistance and increase in current Combined Series in Parallel Circuits has both series and parallel parts in the circuit Equivalent Resistance in Series (definition and equation) a value that is equivalent to all the resistors in series - in series wiring, Rs > R(individual) - Use Rs to calculate I in the circuit (I total) Rs = R1 + R2 + R3 + ... What is capacitance and how does it work? Capacitance (above) is the amount of charge that can be stored per volt of potential difference across two parallel plates. C=q/V in Farads or C/s *Where the amount of charge stored on it depends on how hard you push the charge (voltage) and how much plates store (capacitance) LEGO insulator rubber ball insulator mains electricity = 230 volts electric current is measured in amps Multimeter Device to measure all this ish conductor material that DOES allow electricity to flow when electrcal charges move they create ... a current voltage the strength of an electrical force measured in volts sheet lightning lightning appearing merely as a general illumination over a broad area, usually because the path of the flash is obscured by clouds. Squashing Resistors equivalent resistance is the valur a single resistor would have in order to provide the same resistance to the circuit that the multiple resistors provide Silicon-controlled Rectifier One direction, but only after certain voltage level is reached. Basically, a switch type thing. Made up of anode, gate, cathode. Circuit breaker An automatic device for stopping the flow of current in an electric circuit as a safety measure. Resistance (R) In a circuit, devices and wires offer resistance to the flow of charges; aka resistors - inherent property of an object what device is used to change the size of the voltage transformer Electric Power - an important purpose of current in a circuit is to deliver energy from a source (battery) to an electrical device troubleshooting a way to find what is wrong and fix it Electric Circuit (define and describe) a closed loop in which charges flow through and carry electric energy to devices factors that affect amount of resistance type of material, size of wire, length of wire Electric Power (equations) P = ΔE / t P = IV = (I^2)R = (V^2) / R schematics a universal method for drawing electrical components Static charge Electric charge stays where the rubbing happened. Resistor A devices that resists the flow of electricity; it is used to limit the amount of current. open circuit a circuit similar to an incomplete circuit where a connection is missing what is schematics? its a map its paths and components "Charging by Contact" Method of building up charge by rubbing one object against another (e.g. Balloon against hair) if an object has an equal amount of positive and negative charge, it is said to be --------. nuetral Ohm's Law (full wording) Voltage drop between two points (for any device in a circuit) is proportional to the electric current flowing through it. if there is a steep slope there is a_____. high electric field what is the formula for ohm's law? I = V/R or V= IR Features of an electric circuit wires connecting a path, a load and an energy source what are the two types of batteries? a dry cell battery and a wet cell battery
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