Current reel

The inner diameter is 45 mm, the length is 165 mm, and the plastic enamel is wrapped 4 times with 1 mm diameter enamel. There are about 560 rolled reels. Output is provided with 4 mm bored screws. It is used together with current balance when it is measured with basic units of magnetic field. It is also used in the experiment of obtaining induction current by means of bar magnet and galvanometer.