"When this gauge is stretched the length is increased by 0.1% but its cross-sectional area remains the same. What is the change in the resistance of the gauge?"
I know the equations I=nAvq and R=pL/a, where p is resistivity.
I just cannot understand how you would work this out. Please can somebody explain?
Any help would be greatly appreciated,
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Drift Velocity Question - how Resistance changes when increase wire length by 0.1%? watch
- Thread Starter
- 05-11-2016 11:30
- 05-11-2016 17:41
That might be a question about a strain gauge
tells you that if a is constant and ρ is constant then R is directly proportional to L