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Conventional current flow
Current flow assumed to be in a direction from high charge concentration (+) to low charge concentration (-).
An atomic particle said to have a negative (-) electric charge; ____________ are the means by which the transfer of electric energy takes place.
Electron current flow
Current flow assumed to be in the direction of electron movement from a negative (-) potential to a positive (+) potential.
The space around a charged material in which the influence of the electric charge is experienced.
The basic materials that make up all other materials; they exist by themselves (such as copper, hydrogen, carbon) or in combination.
Electrons located in the outer orbit of an atom that are easily removed and result in flow of electric current.
The part of an electric system that shows whether the system is on or off or that a specific quantity is present.
The part of an electric system that converts electric energy into another form of energy, such as an electric motor that converts electric energy into mechanical energy.
A circuit that has a broken path so that no electric current can flow through it. A circuit with infinite resistance.
The part of an electric system through which electrons travel from a source to a load, such as the electric wiring used in a building.
The opposition to the flow of electric current in a circuit; its unit of measurement is the ohm (Ω).
A material that has a value of electric resistance between that of a conductor and an insulator and is used to manufacture solid-state devices such as diodes and transistors.
A circuit that forms a direct path across a voltage source (with little or no resistance) so that a very high and possibly unsafe electric current flows.
The part of an electric system that supplies energy to other parts of the system, such as a battery that supplies energy for a flashlight.
Electricity at rest caused by accumulation of either positive or negative electric charge.
The property which enables a device to store electrical energy by means of electrostatical fields.
When a capictor is not charged, there is _______ between the two plates in terms of charge. Since both contain the same amount of electrons.
The positive upper plate of the capacitor _______ the free electrons of the negative plate.
An electrostatic field is created between the plates in the diaeletric material as the capacitor
What is the name of the process? When switch connects the capacitor to R2 the free electrons on the negative plate rush through R2 to the positively charged plate. The flow of electrons continues until the two plates are once again at the same potential. The capacitor is _____, and the current stops
RC Time Constants: This is describing____: The rate of current flow changes, as the capacitor _______, it begins to be only affected by the resistance of the circut, later it gets a resistance of its own, and it begins to slow the current
RC Time Constants: This is describing_____:As the capacitor begins to _______, the potential between the plates are very high, current is determined by this potential and the resistance in the ______ path. As the capacitor_____ the potiential lessens and the current slows
RC Time constant
We can not determine the time because of changing current values. But if one divides the full amount of charge/discharge time into five intervals, it can become a single interval of time. This is described as the
Current flows through the capacitor while the capacitor is ______. But, current does not flow through the capacitor.
The capacitor continues to________until the difference of potential between the two plates is the same as the voltage of the battery
How much more current can flow through the capacitor once it has the same voltage as the battery (chose no more, a decreased amount, the same as in the beginning, ralph nader)?
This is affected by four factors: the Length of wire, Material the wire is made of, cross sectional area of the wire, temperature of wire
is directly related to the length of a wire as well as inversly related to the area of a wire
This type of material is located along the periodic staircase; their valence shell is half full
Series and Parallel
What are the two primary circuts: (shorter one[in terms of letters] and longer one)
This is the process by which a small amount of foreign element is added to silicon to change its electrical properties
Here is a little joke to cheer you up while taking the test, do not worry this is the only one, I apologize in advance though for the corny humour, but anyways, here is a wee respite, what element is considered the jester of the jail?
When Silicon is doped with phosphorus and arsenic they have (or another question could be what is the majority carrier?)
Holes (missing bonds)
When Silicon is doped with Aluminum or Gallium there are (or another question could be what is the majority carrier)
When Silicon is doped with phosphorus and arsenic it becomes (negatively or positively charged)
When Silicon is doped with Alumnium and Gallium it becomes (negatively or positively charged)
This forms when opposite charges build up on each side of the depletion zone preventing the further combinatino of electrons and holes
This section of a diode is known as the cathode the majority carriers are electrons (N or P-type)
Emitter, Base, Collector
The three parts of the transistor from left to right looking from the flat side are (part, part, part)
This (forward or reverse)bias of the transistor between the base and emitter turns the transistor on
Once the what (NPN or PNP)type transistor is on, the majority of the current flows from theEmitter into the Collector and a small current from the base to the emitter
Once the what (NPN or PNP)type transistor is on, the majority of the current flows from theEmitter into the Collector and a small current from the emitter to the base
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