A student investigated how the magnetic flux density, BBB, at the center of a solenoid varies with the current, III, flowing through its coils.
They plotted their results on the graph below:
Which of the following statements correctly describes the mathematical relationship between the magnetic flux density B B\,B and the current III?
B=IB = IB=I
B∝I2B \propto I^2B∝I2
B∝IB \propto IB∝I
B∝1IB \propto \frac{1}{I}B∝I1