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electric circuit
- a complete circle of wires that electricity can flow through
- used in electronics
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voltaic cell
- a device used to create current
- also known as a cell
- wet or dry
- most batteries are cells
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battery
- a lot of cells used simultaneously to create more potential difference
- eg. car battery
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electrode
- a conductor used to create electric current
- half a cell
- usually made of things like copper, silver
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electrolyte
- a metal that conducts electricity really well
- eg. copper, gold, silver
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dry cell
- a voltaic cell that uses a paste instead of liquid in between electrodes
- most common cells are dry
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wet cell
- a cell that uses liquid in between electrodes
- eg. car batteries
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primary cell
- a one time use cell
- most common batteries are these
- eg. AAA, AA, C, D
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secondary cell
- a cell that can be recharged
- eg. phone batteries, car batteries
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fuel cell
- a cell that creates electricity from a fuel source not directly in the cell
- hydrogen fuel cells
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solar cell
- a cell that uses solar energy to create electricity
- used in solar panels
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terminal
- a side of a cell
- positive or negative
- negative flows to positive
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switch
- a device that can turn on or off the current
- always shown in open position
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open circuit
- an incomplete circuit
- no charge going through it
- switches usually control this
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electric current
- electricity flowing through a circuit
- used to power electronics
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coulomb
- used to measure charge
- equal to 6.24*1018 electrons
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ampere
- equal to one coulomb of charge per second
- measures current
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electrical resistance
the amount of potential difference removed from a current by a load
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resistor
- a device specifically for electrical resistance
- zig zag line
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load
- something that transforms electrical energy into other forms of energy
- eg. light bulb
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potential difference
- how much energy an amount of charge has
- measured in joules per coulomb
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volt
- measured in joules per coulomb
- measures potential difference
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circuit diagram
- a simple drawing of a circuit for non-artists
- wires=straight lines
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series circuit
- a circuit with one path
- gr. 6 level
- voltage adds up, current never changes
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parallel circuit
- multiple paths
- voltage never changes, current adds up
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ohm's law
- V=IR
- current times resistance equals potential difference
- really useful!
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ohm
- equal to 1 volt per amp
- measures resistance
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superconductor
- a conductor that uses cold to make it a perfect conductor
- used in supermagnets and particle accelerators
- liquid hydrogen=keeping the cool
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non-ohmic
- something that doesn't follow ohm's law
- lightbulbs are somehow examples
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loads in series
- self-explanatory
- split voltage between them
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loads in parallel
- self explanatory
- splits current between paths
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