Magnetic FieldsThe force on a current and on a moving charge, and the hand rules.PhysicsThe force on a current-carrying conductor isperpendicular to both the current and the field.F = BIL sin θ · F = Bqv sin θCurrent perpendicular to fieldF = BILsin 90° = 1.Current parallel to fieldF = 0sin 0° = 0.Charge in a fieldCircular path, r = mv/BqTHE COMMON MISTAKEUsing the left hand for inductionFleming's left hand is for the motor effect onlyLeft hand: force from a current. Right hand: current from motion. Using thewrong one reverses every direction.A magnetic force does no work: it is always perpendicular to velocity,so it changes direction and never speed.Magnetic Fieldslearnposters.com
Magnetic Fields — printable physical science wall chart from LearnPosters. Free vector PDF, US Letter and A4.

What’s on the Magnetic Fields poster

The rule, 3 worked examples, and the mistake everyone makes.

A magnetic force does no work: it is always perpendicular to velocity, so it changes direction and never speed.

Questions about the Magnetic Fields poster

What’s on the Magnetic Fields poster?
The rule, 3 worked examples, and the mistake everyone makes. The force on a current-carrying conductor is perpendicular to both the current and th…; F = BIL sin θ · F = Bqv sin θ; Current perpendicular to field = F = BIL; Current parallel to field = F = 0; Charge in a field = Circular path, r = mv/Bq; Common mistake: Using the left hand for induction → Fleming's left hand is for the mo…. A magnetic force does no work: it is always perpendicular to velocity, so it changes direction and never speed.
Who is the Magnetic Fields poster for?
Magnetic Fields belongs to the Physics section rather than to a school year, because physical science is not something one grade owns. Anyone learning electromagnetism can pin it up — a beginner, a student mid-course, or someone revising years later.
When should you use the Magnetic Fields poster?
Left hand for the motor effect. Right hand for the generator effect. A wall chart earns its place by being glanceable from where the work is happening, so Magnetic Fields belongs on the wall where that physical science work actually happens, within glancing distance, rather than filed away.
What other posters go with Magnetic Fields?
AC Circuits, Capacitance and Circuit Basics sit alongside Magnetic Fields in the Physics section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.AC CircuitsCapacitanceCircuit Basics
Is the Magnetic Fields poster free to download and print?
Yes. Magnetic Fields downloads as a free PDF with no account, no email and no watermark, like everything else in the Physics section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Magnetic Fields poster print at?
Magnetic Fields is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Magnetic Fields loses nothing.Printing guide

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