How to calculate the percentage error for moving iron voltmeter?

  • #1
kloong
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the moving iron voltmeter has resistance of 5k ohm at 15c when it reads correcectly when connected to a supply of 200V.
and the copper coil's temperature coefficient at 15c is 0.004ohm/c.

so what's the percentage error in the reading when it's 50c?
 
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  • #2
Does the temperature coefficient remain the same from 15C° - 50C°?

Before we can help, you have to provide an attempt at the solution. Or do you have a question about the problem statement itself?
 
  • #3
oh, it's ok now. I've got it already. thanks anyway. =)
 
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