EM6.11 Varying B Field

Use with an overhead transparency projector, iron filings and power supply (Shelf C1-1). By driving a current through a wire, the magnetic field can be observed using iron filings. Different wire configurations are available - perpendicular to the plane (resulting B field is circumferential), suspended above and parallel to the plane (field points either left or right depending on direction of current), solenoidal (field is vertical inside the coil), toroidal (field is circular inside the coils). An alternative to this demo can be used well with the document camera - involves a perpendicular wire, and several strategically placed compasses to show the field circling the wire.

Equipment Location: Shelf D3-4