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30 Cards in this Set
- Front
- Back
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Negative particles are called?
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Electrons
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Positive particles are called?
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Protons
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Neutral atomic particles are called?
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Neutrons
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Opposite electrical forces do what?
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Attract
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Name of anything that turns electrical energy into another form of energy.
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Resistor
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Current of electricity through a circuit is measured in?
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Amperes
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The push/pull in a power supply measured by the potential motion of electrons is called?
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Voltage
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Ampres (I) can be found by dividing voltage by what?
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Resistance
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The Power or Heat drawn by a resistor measures in watts can be found by multiplying the square of ____ times resistance?
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Current
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Amps multiplied by Voltage equals what?
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Watts
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Voltage squared divided by resistance equals?
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Power in Watts
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The total resistance of a series circuit is found how?
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R1+R2+Rn
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The total resistance of a parallel circuit is found how?
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1
_____________________ = R total ((1/R1)+(1/R2)+(1/Rn) |
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As resistors are added in parallel the total resistance: increases or decreases?
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Decreases
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Things that are good heat conductors are generally: good or bad electrical conductors?
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Good
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If you wanted to build up a large electrostatic shock where could you best do this: Arizona or Florida?
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Arizona.
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A bird on a high voltage power line. A girl with long arms grabs the line. Why does the bird live? Why does the girl die?
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The girl provides the current a path to the ground.
The bird does not. |
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Batteries convert _____ energy into ____ energy.
Choices: Chemical, Kinetic, Electrical, Mechanical, Potential |
Chemical to Electrical
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Name the electrolyte, anode and cathode materials of a lead acid battery during discharge.
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Electrolyte = Sul. Acid H2SO4
Anode = lead Cathode = lead oxide |
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Inside a cell electrons flow from the _____ to the _____?
anode cathode |
cathode to anode
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anode means the electrons move (towards or away) from a specified terminal?
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away
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Explain fuel cell.
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A fuel cell converts oxygen and hydrogen into water harnessing the direct current produced in the process.
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Oxygen or Hydrogen looses an electrons in a Hydrogen Fuel Cell.
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Hydrogen
2H2 => 4H+ + 4e- |
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Current flows towards or away the positive terminal?
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Away
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Electrons flow towards or away the positive terminal?
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Towards
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Current passing through a coil induces a right or left hand magnetic field?
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Right Hand
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Motors need an alternating or direct current to operate?
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Alternating
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Motors turn _____ energy into ____ energy.
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electrical into mechanical
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Generators turn ____energy into ____ energy.
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Mechanical into Electrical Energy.
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An alternating magnetic field in a loop will cause _______?
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A Current
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