A student records the current through a resistor with constant resistance and the potential difference (p.d.) across it. The data are then used to produce a graph of current against p.d. The current readings include a systematic error. How could this be identified from the graph?
- AAt least one anomalous data point can be identified.
- BThe data points are scattered about the straight line of best fit.
- CThe graph is a curve, not a straight line.
- DThe straight line graph does not pass through the origin.