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make a magnatic field and use only four 1.5 volt battreris Answered

 i want to make a magnatic field only use only  four 1.5 volt battreris(4*1.5 volt).who can lift the 500 kg wait only for two sec, this megnatic field i can aply only 6 sqr inch plate only plz send me the digrame if u can.

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orksecurity

8 years ago

Oh, it can probably be done -- if each of those 1.5V batteries can deliver lots and lots (and lots and LOTS) of amps. In other words, I really don't think you're going to do it with D cells (they neither contain enough power nor have low enough internal resistance). You might be able to do it with larger batteries -- a 6V automobile battery, for example.

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steveastrouk

8 years ago

Its an interesting question to answer, and I  am afraid I can't. A lot depends on the quality of the magnetic circuit between the electromagnet and the object to be lifted. If you can get a very low reluctance path, you'll need less flux to create the forces you need.

Steve

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Sandisk1duo

8 years ago

unless you get this thing custom built, you can't lift 500kg

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NobodyInParticular

8 years ago

 Asking for an electromagnet that will hold on to 500kg using only a few flashlight batteries is like asking for a car that will break the sound barrier but use only a drop of gasoline as fuel.

What you need is a permanent magnet in a lifting assembly that can be stuck to the object and then later levered away from it. An industrial magnetic lifter of the required strength will cost you about $300 (or the bare magnet, about half that).