I'd have to see the numbers together with your measurement process and equipment used.
But there are many possible sources of error. You need to calculate all of those and apply them to each reading to determine the accuracy of each reading.
The anomalies might arise from experimental errors which in turn could be caused if other variables weren't the same throughout the experiment. These include...
1. cross-sectional area of the wires.
2. length of the wire
3. Resistivity .(type of wire used) since, R= pL/A (p is a constant)
these metals are used in combination to achieve a resistor which has nearly no change with temperature. Like anything else the match may not be perfect. A tiny drift in either direction is possible.
Dear,
Thanks, am also fine like you then dear kindly find the ratio of mix constantan & nichrome
Usually when the temperature increases, the resistance increases. I have some anomalous data that when the temperature increased, the resistance of the wire decreased. The metals are constantan and nichrome. Could someone explain a reason to how I got this?
