Calculate Rsh and R1: 3V Meter Movement

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AI Thread Summary
The discussion centers around calculating the values of R1 and Rsh for a 1mA meter movement with an internal resistance of 50 Ohm and a 3V battery. Participants express confusion regarding the term "half scale deflection" being given as 0.5 Ohm, questioning its relevance since scale deflection is typically measured in amperes. There is a need for clarification on how to determine Ish without knowing the value of I. Additionally, the absence of a diagram to illustrate R1 and Rsh contributes to the confusion. The conversation highlights the challenges in understanding the problem's parameters and the calculations required.
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Homework Statement



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.

Homework Equations



Vsh = Vim

IshRsh = ImRm

The Attempt at a Solution



I don't 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 don't know what is I.
 
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cyberjupiter said:

Homework Statement



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.

Homework Equations



Vsh = Vim

IshRsh = ImRm

The Attempt at a Solution



I don't 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 don't know what is I.

Yeah, the question is a little confusing at first. Is there a figure or other drawing that you can post that shows what R1 and Rsh are?
 
I'm sorry but i don't have any diagram given. Only that question is given.
 

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