Compasses show the direction of the magnetic field around a current in a wire. Iron filings align with the field lines. Place wire and compasses, if desired, under document camera or on projector. If ...
A coil of wire, or solenoid, consists of a wire coiled up into a spiral shape. When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet.
an electric current flowing through a wire coil in a magnetic field creates a force that rotates the coil, thus creating torque. However, keep in mind that the formula above is only applicable to DC ...
A coil of wire, or solenoid, consists of a wire coiled up into a spiral shape. When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet.
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