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Homework Help: Large current and series meter

  1. Jan 25, 2010 #1
    Suggest a reason why it is difficult to measure a large current (2000 amps) with a conventional meter in series in the circuit.

    The answer is:

    Even a very small resistance (in series) with 2000 A through it would generate much heat

    Why is this? How do we get this conclusion? From R=V/I? So is the heat produced proprotional to pd?
  2. jcsd
  3. Jan 25, 2010 #2


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    Staff Emeritus
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    Homework Helper

    This is a question about the heat or power in a circuit. Look in your textbook or class notes for an equation that relates power P, current, and resistance.
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