1142 Definitions Flashcards
The first sustained electric current from a chemical reaction was generated by ________
an Italian physicist named Alessandro Volta
The positive terminal of a voltaic cell is called the _____
anode
The negative terminal of a voltaic cell is called the _____
cathode
8 page F
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equivalent mass of an element
atomic mass/valence
alternating current made to go in one direction
rectified current
current and voltage
directly proportional
emission and behavior of electrons in vacuum tubes and semiconductor devices
electronics
electronic device with electrodes
vacuum tube
crystal with unbonded elecctrons
n-type semiconductor
vacuum tube containing a filament and plate
diode
destructive interaction between a current and the magnetic field it produces
self-induction
are due to eddy currents
induction heating
Two purposes for which direct current is required and alternating current is unsuitable
electroplating
recharging a battery
The root-mean-square voltage of household current in the U.S.
115 volts
Lenz’s law
A current induced by electromotive force always acts to oppose those forces
The basic building blocks of electronic circuits
resistors capacitors diodes triodes transistors
The release of electrons from a heated metal surface
thermionic emission
invented by John Ambrose Fleming
the diode
Part one of a transistor
emitter which supplies electrons and acts as a filament
Part two of a transistor
base which is the center layer of the transistor and acts as the grid
Part three of a transistor
collector which accepts electrons and acts as the plate
The first radio broadcast of voice and music
a violin solo of “O Holy Night” and a Bible reading
maximum current and voltage in a circuit
divide by .707
