New full scale deflection of an ammeter

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Bolter
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Homework Statement
Calculate the new full scale deflection of the ammeter
Relevant Equations
Rs = iRc/I-i
Question:
Screenshot 2020-02-14 at 09.05.19.png


My attempt:

IMG-3858.JPG


Does 4.75 amps for the full scale deflection seem okay?

Thanks for any help!
 
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