Electromagnet: a metal core is surrounded by a coil of wire and a current is passed through the wire to create a magnetic field. The strength of the magnet can be adjusted by increasing or decreasing the voltage of the electrical current. Magnetic tape does not attract other magnets. It is not suitable for attaching magnets. Self-adhesive ferrous tapes, metal tapes, decorative magnetic boards, or metal strips provide suitable surfaces for magnets. 5. What are the disadvantages of magnetic tape?

Temporary: this type of magnet works when it’s in a magnetic field, but will lose its magnetism when removed from that field. Temporary magnets include paperclips and nails. Some disadvantages of magnetic tape include the need for maintenance and careful handling, susceptibility to damage, and the requirement for specialist equipment for usage. 6. Is magnetic tape permanent? If you adhere your magnetic tape directly to an object though, it makes the object more or less magnetic and this object can now be placed on your fridge or perhaps a metallic whiteboard like you would find in a classroom. This use of magnetic tape is split between something functional like hanging a box of facial tissue somewhere handy or it is used as a way to hang arts and crafts in a place you would like to see them, like the refrigerator.Magnetic tape has a lifespan of around 30 years, making it a long-lasting medium. However, its longevity depends on proper protection from harmful factors. In comparison, a hard disk has a lifespan of 3 to 5 years. 7. How many pounds can magnetic tape hold?