Magnetic Field
This interactive simulator explores Magnetic Field in Electricity & Magnetism. Bar magnets and current-carrying wires with field line visualization. Use the controls to change the scenario; watch the visualization and any graphs or readouts to connect the model with lectures, labs, and homework.
Who it's for: Best once you already know the basic definitions and want to build intuition. Typical context: Electricity & Magnetism.
Key terms
- magnetic
- field
- magnetic field
- electricity
- magnetism
How it works
Magnetic dipoles are modeled as point dipoles (field ∝ 1/r³). Long straight wires produce the familiar 1/r circular field in the plane (right-hand rule). Pink arrows show the local B direction; gold curves are streamlines traced from the north side of each magnet.
Key equations
More from Electricity & Magnetism
Other simulators in this category — or see all 35.
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Ideal Transformer
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Mutual Inductance
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Wheatstone Bridge
Four arms, G between mid nodes; V_B − V_C and null when R₁R₄ = R₂R₃.
Dipole in Uniform E
τ = −pE sin θ, U = −pE cos θ; damped rotation; optional AC on E.
Ferrofluid (Stylized)
Purple metaball pool, spikes, field-line hints — visual only, not MHD.