Solenoid Electromagnet Diagram - How a Coil Creates a Magnetic Field #3851450 (License: Personal Use)

This schematic shows a cylindrical green core wrapped uniformly with insulated wire forming a solenoid, connected to a DC power source (yellow battery with labeled + and - terminals). When current flows, it generates a uniform axial magnetic field inside the coil, illustrating Ampère’s circuital law and the right-hand rule. The diagram is idealized for educational clarity, omitting resistance, core material specifics, or flux leakage.

Used in physics and electronics education to teach electromagnetic induction, electromagnets, and circuit fundamentals; appears in textbooks, online tutorials, and STEM lesson plans targeting high school or early university learners.