Physics

Problem

Two points, P and Q, lie on the axial line of the same bar magnet at distances

0.50\,\text{m}

and

1.00\,\text{m}

, respectively, from the magnet’s center. Which of the following best describes the ratio

\dfrac{B_{\!P}}{B_{\!Q}}

of the magnitudes of the magnetic field at these points? a) 4 b) 8 c) 16 d) 2