motor

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Homopolar Motor

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 0417171312

Wire balances on top of battery and is free to rotate. Top of wire touches positive terminal; bottom of wire touches magnet connected to negative terminal. Wire completes circuit and current travels through wire. Direction of magnetic field creates a Lorentz force that causes wire to turn.

Historical significance: First electric motor. First successful model devised by Michael Faraday. See: https://en.wikipedia.org/wiki/Homopolar_motor

  • Located in L01, section B-4.

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Thermoelectric Motor

 

Thermoelectric Motor Demo Picture

  • Immerse aluminum legs in baths of different temperatures to produce electrical energy. (May take a few minutes before motor engages. The larger the temperature difference, the better.) Process can be reversed by connecting a low voltage source to the two banana jacks- temperature difference arises between the two legs.
  • Located in L02, section C3.

 

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Crude Generator and Motor

 

Crude Generator and Motor demo picture
Crude Generator and Motor demo picture

  • Purpose: Demonstrate the importance of electromagnetic induction
    in the operation of generators and motors.
  • Motors (right photo) consist of small coils of wire suspended
    above niodym-magnets; coils rest upon bent wires, and bent wires are connected,
    via clip leads, to a battery pack.
  • Generator (left photo) consists of a small coil of wire suspended
    above a niodymium magnet; coil rests upon leads which are connected to a multimeter.

Location

  • Generators and Motors located in L01, section B4
  • Multi-meter in L35, section F3
  • Battery packs in L35, section E1.
  • Clip-clip cables in L35, section E3

 

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Energy in Capacitor

 

Energy in Capacitor demo photo

  • Purpose: Compare the energy stored in a capacitor to the
    potential energy of an object raised vertically by the electrical discharge
    of the capacitor; measure the efficiency of a motor.
  • Located in L01, section B1.