Amperes Rule Apparatus
Product Details:
Study the magnetic field around a wire. Consists of a heavy copper wire arranged so that iron fillings can show the direction of the field around the vertical portion of the wire. A compass can be placed under the horizontal portion of the wire for showing the same effect. By sending current through the wire and noting the directions in which the needle points, one can trace the lines of force around the wire and also determine the direction of the current.