Back to Magnetic Fields, Field Lines, and Force — Problem 3 · Task Set 12

Exercises: Magnetic Fields, Field Lines, and Force

Work through each section in order. Show your work where indicated. For direction problems, state your answer as a cardinal direction (up, down, left, right, into page, out of page) or compass direction as appropriate.

Grade 11·22 problems·~30 min·OpenStax Physics (High School)·section·sec-20-1

Work through problems with immediate feedback

Recall / Warm-Up

A student draws magnetic field lines for a bar magnet and makes one of the following errors. Which rule for magnetic field lines did the student violate?

The student draws field lines that cross each other near the north pole.

Field lines must emerge from the north pole and enter the south pole.

Field lines must never cross.

Field lines must form closed loops.

Field line density must be greater near the poles.