Physics module 18 · Put your knowledge to work
Magnetism Applications
Compute fields from currents and forces on currents and moving charges.
5 problem sets · Learn at your pace · Some resources require membership
From understanding to problem solving.Your next step
Choose a problem set
Start with a familiar topic, then work towards more demanding problems.
5 of 5 sets
- 01Problem studio
Magnets and Magnetic Field Problems
Poles, field lines, Earth’s field, compass deflection, and dipole scaling.
Open practice - 02Problem studio
Currents Make Fields Problems
Straight-wire fields, solenoids, electromagnets, and parallel-wire forces.
Open practice - 03Problem studio
Force on Currents Problems
F = BIL sinθ, Fleming’s left hand, levitation, balances, and motor torque.
Open practice - 04Problem studio
Force on Moving Charge Problems
F = qvB, circular paths, velocity selectors, and mass spectrometers.
Open practice - 05Problem studio
Magnetism Calculus Problems
Biot–Savart elements, loop-centre integration, varying-field forces, and field nulls.
Open practice
Review the foundations 5 related lessons
Extra challenging questions
Take the ideas further with course-specific extension questions, supplied-data graphs and worked solutions.