I can´t prove Ohm´s law

Discussion in 'Homework Help' started by Obi1knube, Aug 1, 2010.

  1. Obi1knube

    Thread Starter New Member

    Aug 1, 2010
    "I have a little laboratory at home and I intend to do a lot of experiments, the problem is that I tried the first experiment (OHM´s Law) I found out that the Carbon film fixed resistor don´t appear to consume current.
    I applied 12 volts from the DC power supply, but the voltmeter was reading about 11,9volts, but the Ammeter was reading zero, I repeated with1k and 10k resistance but nothing changed. I am a bit desillusioned and i need help."
    I really want to verify the functions of the resistors in electronics circuits.
  2. Jony130

    AAC Fanatic!

    Feb 17, 2009
  3. steveb

    Senior Member

    Jul 3, 2008
    ... also, some ammeters have fuses ... worth checking.
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    Did you remember to open the circuit path and arrange for the ammeter to be part of the current path? You measure voltage in parallel with a resistor. You measure current in series with it.