I need help to solve this question

Discussion in 'Homework Help' started by ToinkToink, May 17, 2015.

  1. ToinkToink

    Thread Starter New Member

    May 17, 2015
    I hope u guys can help me to solve question no ii and iii which is dc voltmeter loading effect. Thank you in advance ;);)
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    when you put the voltmeter across the resistor,its own internal resistance has an effect on the reading, the meter is acting as a resistor in parallel and lowers the Actual voltage, so you need to use a voltmeter with the highest internal resistance to get a more accurate reading.

    the actual Voltage across each resistor is 12V, so if you calculate the"effective " resistance with meter, then you use ohms law to give the volmeter readings.
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