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