Electric Circuits Flashcards

Terms Definitions
Series Circuit
ohm's law applies
SI unit for power
to thrust back or away.
different types of current have different ...
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
Any complete path along which charge can flow.
parallel circuit
An electric circuit with multiple paths
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.
the flow of electricity through a wire or other conductor
static electricity
a stationary electric charge built up on an insulating material.
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)
rubber ball
mains electricity =
230 volts
electric current is measured in
Device to measure all this ish
material that DOES allow electricity to flow
when electrcal charges move they create ...
a current
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
Electric Power
- an important purpose of current in a circuit is to deliver energy from a source (battery) to an electrical device
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
a universal method for drawing electrical components
Static charge
Electric charge stays where the rubbing happened.
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 --------.
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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