Resistivity of nichrome
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... onstant to prevent the whole circuit from overheating. I managed to do this by quickly switching off the power pack supply every time I had recorded my set of readings. I then left the power pack to rest for a small interval of time before switching it on again to record the next set of readings. * I also kept the diameter of the wire constant by using the same piece of wire throughout the whole experiment. Justification of the equipment range: - Ammeter: - I used a full scale deflection ammeter of current range from 0-1A because I only wanted to measure small currents passing through the circuit and not large currents however all the digital ammeters that were available had a current range of 0-20A and there werenĘt any available digital ammeters that had a current range ...
