In an experiment to determine the relationship between the current I through a piece of tungsten wire and the potential difference V across it, the theoretical relationship used was I=kVn
, where k and n are constants which may be obtained from a straight line graph of the form y = mx + c, the symbols having their usual meaning. The value of k can the be experimentally determined from ---------
A. the slope of the graph of logI plotted on the vertical axis against logV plotted on the horizontal axis
B. the intercept on the vertical axis of the graph of logI plotted on the vertical axis against logV plotted on the horizontal axis
C. the slope of the graph of I plotted on the vertical axis against V2
plotted on the horizontal axis
D. the intercept on the horizontal axis of the graph of I plotted on the vertical axis against V2
plotted on the horizontal axis
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