electromagnet

  1. Y

    Neodymium magnet and electromagnet experiment

    Hi, I wanted to repel away a standard neodymium magnet by using an electromagnet. I got a nail, some coil, a neo magnet and a 9v battery. I wrapped some coil on the nail, and attached it to the battery. The problem is that the neo magnet attaches to the nail regardless if the nail is...
  2. O

    Is it possible to stop a bullet by just using a magnet?

    Stop it or deflect it? and what are the laws and the effects that I need to know to determine something like this?
  3. avito009

    How is electricity produced by a electromagnet?

    I know that an electromagnet is made from a coil of wire which acts as a magnet when an electric current passes through it. Often an electromagnet is wrapped around a core of ferromagnetic material like steel, which enhances the magnetic field produced by the coil. Does that mean that first...
  4. R

    Electromagnet working

    Hello, If we build electromagnet of 30AGW with supply of 12V 20Amps therea re 300 turns on iron nail of 3inch it get hot with time. and make perfect magnet how to define or calculate its magnet strength?
  5. P

    Electromagnet actuator increase power

    Hello All, I am trying to make a device that presses down on a foot pedal when activated. The main requirement is that it needs to be silent and powerful. I have tried other types of actuators and servos, but all are too noisy. My next idea was to use an large electromagnet (salvaged...
  6. H

    Electromagnet to attract small iron pieces

    i want to build an electromagnet which can attract small iron pieces(2-3 mm long) at a distance of 10 cm from the magnet.I am using 24 awg. magnet wire.Please help .answer these questions - 1) How long magnet wire (24 awg) do i need? 2)How much current 3) what shud be least radius of solenoid...
  7. T

    anything stronger than a magnet?

    Hi, is there anything stronger than a magnet at repelling itself? Or is there anyway to have a really strong electromagnet. I'm trying to develop something that repels itself but its force is too weak for use. I'm looking for some way to either boost this repelling force or looking for some...
  8. A

    magnetic field strength of dofferent regions of an electromagnet

    In electromagnets, does the magnetic field increase in strength towards the middle of the column of coils? I'm under the impression that it does, however, I may be wrong. Either way, I'd like to know why. I was also wondering whether or not the magnetic field strength in a soft iron core...
  9. A

    Field Strength in an Electromagnet

    In electromagnets, does the magnetic field increase in strength towards the middle of the column of coils? I'm under the impression that it does, however, I may be wrong. Either way, I'd like to know why. I was also wondering whether or not the magnetic field strength in a soft iron core...
  10. A

    Strength of the Magnetic Field in Different Parts of an Electromagnet

    In electromagnets, does the magnetic field increase in strength towards the middle of the column of coils? I'm under the impression that it does, however, I may be wrong. Either way, I'd like to know why. I was also wondering whether or not the magnetic field strength in a soft iron core...