Remove the nail from the coil and test its magnetic properties: see if you can pick up some paper clips with it, for example. If the electromagnet is not strong enough, the nail will not stay magnetized after the battery is disconnected, so to see this effect, use as large a current source as possible.
Q. What happens when you wrap a wire around a nail?
By simply wrapping wire that has an electrical current running through it around a nail, you can make an electromagnet. When the electric current moves through a wire, it makes a magnetic field. If you coil the wire around and around, it will make the magnetic force stronger, but it will still be pretty weak.
Table of Contents
- Q. What happens when you wrap a wire around a nail?
- Q. What happens if you wrap a wire around a magnet?
- Q. How many paper clips can an electromagnet pick up with 20 coils?
- Q. Why are the paper clips attracted to the electromagnet?
- Q. Does pulsing the current increase the strength of a copper electromagnet?
- Q. What is created when the wire is wrapped around the iron core?
- Q. Why do electromagnets get hot?
- Q. How do you calculate the force of an electromagnet?
Q. What happens if you wrap a wire around a magnet?
When a wire is wrapped around a magnet , the magnetic field induces electricity inside the wire. This is one of the examples of electromagnetism.
Q. How many paper clips can an electromagnet pick up with 20 coils?
Results
| Number of turns of wire | Number of clips picked up – trial 1 | Number of clips picked up – trial 2 |
|---|---|---|
| 20 | 7 | 8 |
| 30 | 11 | 12 |
| 40 | 16 | 15 |
| 50 | 19 | 19 |
Q. Why are the paper clips attracted to the electromagnet?
Why do magnets attract paper clips? Magnets attract paper clips because magnets have a magnetic field, which creates a force, that pulls on other ferromagnetic materials. A paper clip is usually made of steel wire. Iron is a ferromagnetic material that is attracted by magnets.
Q. Does pulsing the current increase the strength of a copper electromagnet?
According to Ampere’s Law, the magnetic field around a current-carrying wire is directly proportional to the strength of the current. In other words, increase in the current strength, increases the magnetic field.
Q. What is created when the wire is wrapped around the iron core?
An electromagnet is a current carrying wire wrapped around an iron core. You can create an electromagnet by first making a magnetic field. Then, the magnetic fields around each coil of wire add together to form a stronger magnetic field inside the coil.
Q. Why do electromagnets get hot?
The more coils your electromagnet has, the stronger the electromagnet will be. The higher the battery voltage, the stronger the electromagnet. When any electromagnet gets hot enough, the magnetism disappears. The absence of heat produces a super magnetic effect.
Q. How do you calculate the force of an electromagnet?
Engineers make solenoids – electromagnets – by twisting lengths of metal in a spiral fashion around a cylindrical template. You can determine the magnitude of that force by plugging the dimensions and other properties of the magnet based into a simple equation: F = (n X i)2 X magnetic constant X a / (2 X g2).
