# how to make an electromagnet with a car battery

Use a pair of wire strippers to remove a few centimeters of insulation from each end of the wire. Neatly wrap the wire around the nail. The more wire you wrap around the nail, the stronger your electromagnet will be. Make certain that you leave enough of the wire unwound so that you can attach the battery.

## What is the world’s strongest electromagnet?

The strongest continuous manmade magnetic field, 45 T, was produced by a hybrid device, consisting of a Bitter magnet inside a superconducting magnet. The resistive magnet produces 33.5 T and the superconducting coil produces the remaining 11.5 T.

## How do you wind an electromagnet coil?

Wind the magnet wire around 2 inches of plastic tube, cut from a straw or a pen casing. Leaving 1 foot of wire free, wind the wire around the tube, starting at one end and working your way across to the other. The coils should be neatly wound, and tightly packed together.

## How do you make a permanent magnet?

Take two magnets put one North pole and one South pole on the middle of the iron. Draw them towards its ends, repeating the process several times. Take a steel bar, hold it vertically, and strike the end several times with a hammer, and it will become a permanent magnet.

## Why is my electromagnet not working?

The current may be taking a short cut through your metal pipe, for example. 3) Not enough turns of wire. Magnet wire used in motors is not very thick, so that many turns can be wrapped around in a tight space. To have fewer turns of thicker wire means you have to put more current in it to get the same field.

## Why is the wire used in an electromagnet coiled?

A coil of a wire is used in an Electromagnet instead of just a straight wire because coil has many number of loops of wire and each loop of wire behave as a magnet. … When an electric current flows through the coil , it creates a magnetic field. This produces temporary magnetism in the iron core.

## What happens when you added more coils in the electromagnet?

Moving electrons always create a magnetic field. … When you bend the wire into a coil, the magnetic fields around each loop of the coil add up to make a long , thin magnet with north at one end and south at the other. The more loops the coil has, the stronger the magnetic field, while the current is flowing.

## How much force can an electromagnet produce?

With 100 amps through a 100 turn coil of area 1 sq m, the force on a magnetizable metal at 100mm is 6283 newtons (about 1400 pounds).

## What can auto salvage dealers use electromagnets for?

Wrecking yards employ extremely powerful electromagnets to divide ferrous recyclables from non-ferrous materials, and move those scrap metals or even entire cars from one place to another. This creates a magnetic field around the coiled wire, magnetizing the metal as if it were a permanent magnet.

## What happened to the iron nail with copper wire when you connected it to the dry cell battery?

When the copper wire is coiled around an iron nail and attached to a battery, the atoms in the nail start to line up, too. … The electricity from the battery creates a magnetic field around the coiled wire and nail that acts just like a bar magnet.

## What is the difference between a motor and an electromagnet?

AC Motors. … An alternating current is used to rotate the loops in the magnetic field. Most AC motors produce the current by using induction. An electromagnet causes the magnetic field and uses the same voltage as the coils do.

## What’s the difference between an electromagnet and a regular magnet?

A permanent magnet is an object made of a material that gets magnetized and creates its own persistent magnetic field. An electromagnet is made from a coil of wire that acts as a magnet when an electric current is allowed to pass through it. … Electromagnets require an electric current to work as a magnet.

## Do electromagnets overheat?

Unlike ordinary magnets, electromagnets heat up. … Basically, electromagnets are coils of wire wrapped around a metal core, which in turn are connected to a battery. Although they are easy to make, they can have a problem with overheating if given more voltage than their wires can withstand.

## Can magnets produce electricity?

Magnetic fields can be used to make electricity

Moving a magnet around a coil of wire, or moving a coil of wire around a magnet, pushes the electrons in the wire and creates an electrical current. Electricity generators essentially convert kinetic energy (the energy of motion) into electrical energy.

## Where around the house can you find electromagnets?

Electromagnets are found in doorbells, hard drives, speakers, MagLev trains, anti-shoplifting systems, MRI machines, microphones, home security systems, VCRs, tape decks, motors, and many other everyday objects.

## Does the diameter of the copper wire affect your electromagnet?

Wire Size. Although metal wires are very efficient conductors of electricity, they still have some resistance to the flow of current. Using larger gauges of wire on the coil will decrease this innate resistance. This will increase the current and therefore the field.

## Does galvanized steel work for an electromagnet?

Galvanized steel is magnetic because the base steel metal is magnetic. Galvanized steel is covered with a thin layer of zinc and this process does not interfere with the magnetic strength of the steel. … Not all steel metals are magnetic, however.

## Is AC electromagnet stronger than DC electromagnet?

As for stronger, DC is constant, while AC is alternating and falling in amplitude in the cycle, so DC will give the stronger field, except at the peak voltage of the AC cycle, when AC will be stronger.

## How to Make an Electromagnet – Science Experiment

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