1. The problem statement, all variables and given/known data A 1mA meter movement with an internal resistance of 50 Ohm is to be used. The battery voltage is 3V. Half scale deflection is 0.5 Ohm. Calculate the value of R1 and Rsh. 2. Relevant equations Vsh = Vim IshRsh = ImRm 3. The attempt at a solution I dont understand what it means by half scale deflection 0.5 Ohm. I thought scale deflection is in ampere. In order to find Ish I first need to know the value of I but I dont know what is I.