Magnetsssssssssss?

Question

when current flows through a conducter and another conductor(without current)is placed in its vicinity,does it attract it like a magnet attracts another magnet?

Answer 1

Yes

Answer 2

what?

Answer 3

yes. all conductors emit a weak magnetic force called the lorentz force when current flows through it.

the best example is an electro magnet. where a wire is wound up to form a coil, current runs through and the coil becomes a quite strong magnet.

Answer 4

When a current is present, a magnetic field is present along with it. If there is no current, then there is no magnetic field. The current carrying conductor won't do anything, or at least nothing noticeable, to the wire that isn't carrying current.

Answer 5

Not enough information.

Assuming the current is DC and unchanging:

If the other conductor is a ferrous metal, then it will attract the metal.

If the other conductor is nonferrous, it will have no affect on it.

If the other conductor is diamagnetic, then it will repel it. However, the affect of a diamagnetic material is about a million times weaker than the magnetic affects on a ferrous metal, so the current and therefore the field would have to be -very- strong to observe the effects.

If the current is changing, things become more complicated because of induced currents.

For this I'll assume the simplest interpretation of your question.

Two copper (nonferrous) conductors placed side by side.

An AC current flows through one.

If the 2nd conductor has no complete path for current, there will be no effect.

If the 2nd conductor is a shorted loop, then it will be repelled. This is because the AC field set up by the first conductor induces a current in the 2nd conductor that in turn generates a field in the opposite direction that repels the field of the first conductor. The field must be changing to induce a current in the 2nd conductor, that's why at DC it has no affect on it.

I hope I was clear enough.

This repulsion is how those coin and can shrinkers work. A very fast, large current pulse in a coil of wire produces a very strong, fast changing magnetic field that induces a very large current in the coin in the center, causing a magnetic field that repels that of the coil. This repulsion is very strong and actually squeezes the coin. It also blows the coil of wire apart.