1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Finding Resistance of a Voltmeter

  1. Mar 14, 2012 #1
    1. The problem statement, all variables and given/known data
    I'm trying to find the internal resistance of a Voltmeter.

    The current is 0.212 mA which is measured by I. Rx is 7000 Ohms and the emf of the battery is 1.50 V.

    2. Relevant equations

    V = IR so R = V/I

    3. The attempt at a solution

    How can I start it off to find the Voltmeter's resistance? I don't know exactly to accomplish this. Any help would be appreciated.

    Attached Files:

  2. jcsd
  3. Mar 15, 2012 #2


    User Avatar

    Staff: Mentor

    Hi thiefjack! Can you provide the full question? I think you have extracted just part of it for this post. This circuit diagram won't get you anywhere.

    Or maybe this circuit is your attempt at an answer?

    What information would you need in order to determine the voltmeter's resistance?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?