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Need help with pastpaper question. link provided watch

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    http://www.ocr.org.uk/images/64076-q...-in-action.pdf

    I cant do question 11 part C. I just dont understand it...

    thanks people
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    For each of the other instruments, they have told you the maximum reading (either in volts, or in something that can be converted into volts using the sensitivity), and the sensitivity (i.e. the smallest division between readings the device can detect). You've also got a graph at the start of the question showing the data that the galvanometer has collected. Could either of the other instruments have gathered the same data? If not, why not? (I would suggest that this is most obvious for the digital meter.)
 
 
 
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