This stronger-field-makes-larger-force lesson varies the magnetic field while holding current and wire length fixed, so the ideal force scales directly with B. Doubling the field from 2 T to 4 T doubles the stated force from 24 N to 48 N only for the ideal perpendicular geometry. Real measurements add field-map variation, alignment error, heating, contact resistance, sensor calibration limits, finite precision, and measurement uncertainty.
The checked magnetic force grows directly with field strength. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
A stronger field makes a larger force
Changing the field from 2 to 4 tesla doubles the force from 24 to 48 newtons.