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33 Cards in this Set
- Front
- Back
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static elec. |
electrical charge that builds up on one location of a surface and cant escape until path is given |
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elec. conductors |
materials that allow electrons to move freely because the electrons in the conductors aren't tightly bounded to the nuclei
eg copper, metals, water(conductor only for pure) |
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elec. insulators |
materials that resist movement of the electron because electrons are tightly bounded to the nuclei
eg plastic, glass,rubber, wood |
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coulomb |
6.24 x 10 power 18
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when you gain electrons you become... |
negative
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when lose electrons you become... |
positive
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law of repulsion |
things of the same electrical charge repel
eg negative and negative |
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law of attraction |
things that have opposite electrical charges attract
eg negative and positive |
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electrons affinity |
the charts that defines whether the object has a tendency to lose atoms or not |
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circuit |
a path that allows electrons to pass continuously |
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elec.current |
is the continuous flow of electrons in a circuit by the atoms bumping into each other and causing the electrons to move into different atoms
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load |
the device that converts electricity into different types of electricity
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electrolyte |
is the liquid and paste that conducts electricity and reacts with the electrodes
eg cirtric acid |
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electrodes |
are metal plates in a battery that react with the electrolyte
eg zinc and copper |
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amperage |
amps- the amount of energy that can be used
eg the hoses size |
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voltage |
volts- measure the pressure or force of elelctricity
eg the pressure of the water from the hose |
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wattage |
watts- measure of work that the electricity does per second
volts X amps |
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the three parts of circuit |
load, conductor, energy source
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energy |
the ability to move atoms and transfer energy into other objects and converted into other forms of energy
eg electrons converted into light/heat energy |
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potential energy |
energy stored in an object at rest
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potential difference |
symbol v
measurement voltage the difference between the energy levels of two points of space |
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electrical current measurement |
symbol I
measured in amperage the amount of electrical charge that passes in each point of the circuit per second |
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Resistance |
symbol R
measured in ohms ability to reduce electric current |
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ohms law |
voltage= I (electrical current)X R (resistance)
I= V/R R=V/I |
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2 types of circuit |
parallel circuit series circuit |
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electrical charges |
charges that exert force on to each other |
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anode |
the electrode plate that loses electrons eg zinc |
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cathode |
the electrode that gains electrons eg copper |
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salt bridge |
the wire that replaces the lost electrons |
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galvanic cell |
battery |
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circuit diagram |
a diagram using symbols to show the place of the objects resistors=convert electricity into heat switch= the open and close of the circuit cell battery= the energy source where the symbol has to two line length, short f or the negative and long for the positive lamp/light bulb=load that coverts the electricity into light and heat energy |
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series circuit |
a circuit where the electrons flow in one path and if one part blocked then the whole circuit with stop |
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parallel circuit |
a circuit with there are many paths and blocked part don't effect others |
