Question

A student plots a graph of force against wire length for a current carrying wire in a magnetic field. The current-carrying wire is perpendicular to the field. Which of the following statements is true? *

a) The flux density is the y-intercept of the best fit line.

b) The force is inversely proportional to the wire length.

c) The force is proportional to the wire length.

d) The flux density is the gradient of the best fit line.

Answer 1

the flux density is the gradient of the best fit line