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19 Cards in this Set

  • Front
  • Back
What form of electricity is produced by friction
Static Electricity
What form of current is produced by pressure applied to a crystal
Peizoelectric
When pressure is removed from a compressed crystal, what happens
The voltage produced reverses its polarity
An electric current produced by heat is known as
Thermoelectric current
Thermoelectric effect is also known as the
Seebeck effect
To produce a thermoelectric current
Connect 2 dissimilar metals at both ends and then subject one end to heat
What device is used to produce a thermoelectric current
Thermocouple
In a thermocouple circuit, what are compensating leads
Leads made of the same material as the thermocouple to extend the circuit to indication/control equipment
In a thermocouple circuit, what are extension leads
Leads made of the same thermal characteristics as the thermocouple to extend the circuit to indication/control equipment
Exterior of a magnet, lines of magneitc flux are said to flow
From North to South
Within a magnet, lines of magnetic flux are said to flow
From South to North
Faradays Law states:
When a conductor cuts, or is cut by, magnetic lines of flux, an emf is induced in that conductor
Maximum voltage is induced when a rotating loop of wire is.....
90 degrees to the lines of magneitc flux
At what point in a rotating loops cycle is no current induced
When running parallel to the line of magnetic flux
Who invented the right hand rule?
Fleming
What does the thumb represent in the right hand rule
Motion of the condcutor relative to the magneitc field
What does the index/first finger represent in the right hand rule
Direction of the flux
What does the second finger represent in the right hand rule
Direction of induced current/emf
What form of current flow is produced by light
Photoelectic