Resistance and Current

Discussion in 'General Electronics Chat' started by De-alex, Aug 6, 2014.

  1. De-alex

    Thread Starter New Member

    Aug 6, 2014
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    So for school we have been measuring the resistance, volts and current of various kettles. In comparison with results from other kettles- i have gotten kettles with high resistance but also high amps. How exactly is this possible?
     
  2. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    Kettles? Like an electric rice cooker or an actual kettle? I don't understand.
     
  3. De-alex

    Thread Starter New Member

    Aug 6, 2014
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    Kettles which boil water- for tea and coffee
     
  4. mitko89

    Member

    Sep 20, 2012
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    Current of a kettle? You have discovered a kettle generator? Can you take a picutre of it.
     
  5. De-alex

    Thread Starter New Member

    Aug 6, 2014
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    Im just using a simple power saver deceive to measure the amps/voltage and an ammeter to measure the resistance.
     
  6. AlphaDesign888

    New Member

    Jul 27, 2014
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    Try doing it with incandesent light bulbs. You'll do your head in quicker.

    Dynamic resistance.
     
  7. alfacliff

    Well-Known Member

    Dec 13, 2013
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    the resistance changes as it heats up.
     
  8. crutschow

    Expert

    Mar 14, 2008
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    The cold resistance can be different than the hot resistance. Under what measurement conditions do you measure high resistance with a high current?
     
  9. wayneh

    Expert

    Sep 9, 2010
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    A "smart" kettle may use a triac for temperature control, and thus will not be always full on like a light bulb.
     
  10. crutschow

    Expert

    Mar 14, 2008
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    Good point. That would account for the high resistance with high amps with high resistance, since the triac would give a high resistance reading to an ohmmeter.
     
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