Electromagnet Investigation An electromagnet works similarly to a normal magnet but with one huge advantage. A normal magnet is constantly on but an electromagnet can be turned on and off. This is useful in both the science lab and industry such as a scrap yard. An industrial investigation of this size is obviously not possible in the science lab so in order to simulate a smaller type of situation I'm going to use small weights. I plan to find out the different characteristics of an electromagnet by changing the number of coils around the electromagnet and the amount of current which is passed through it. My hypothesis is that the amount of current and or coils which are placed on the magnet will govern the strength of the magnet. In order for the test to be fair I am going to have to make sure that some aspects stay the same and some are changed. I plan to change the CURRENT (AMPS) and the amount of coils wrapped around the core of the magnet. The factors which will remain the same are the voltage which I will set at 12V and the size of the iron core of the magnet. The investigation will require me to increase the amount of coils surrounding the iron bar. 100 coils will be the number I will use but this will change throughout the experiment. I also plan to see how much weight the electromagnet will hold. The weights which I will use are 10g each and the apparatus has been designed it will consist of a stand and clamp holding the iron core using a piece of iron I will support the weights from it. I hypothesize that as the number of coils increases, so will the strength of the magnet. This is also true with the current. As I increase the current the magnet will become stronger. This will happen because the stronger the current passing through the individual wires, the larger the electromagnetic field created by the individual wires, these all acting on the iron core will force it to increase its
To make sure that my test is fair I will make sure to keep all the
To make sure it is a fair test; the procedure is repeated a couple of
who administers a series of test that must be passed, which points out normal or abnormal
repeat the process 3 times in total to ensure a fair test. At the end
The Effect of the Number of Coils on an Electromagnet On Its Strength Aim: - To establish whether a variation in the number of coils will affect an electromagnet's strength. Scientific Knowledge -. The concept of electromagnets is fairly simple. An iron nail wrapped in a series of coils of insulated wire and then connected to a battery, will enable the nail to pick up paper clips. This is because the current emitted from the battery to the coils magnetizes the nail to the surface.
An electromagnet is a magnet that uses an electric current to attract metal, such as wiring a battery to coils on a ferromagnetic material. Electromagnets are also used in many different ways, some you may not know use electromagnets. Electromagnets are used in places like scrapyards to pick up extremely heavy objects such as cars, etc (Jessa 2009). CAT scanners have electromagnets in them to see the things that they need to see. Electr...
The multiple-layer Tesla coil transformer secondary is excited by resonant inductive coupling, where the primary and the secondary circuits are both being tuned so they resonate at the same frequency (which is ettypically, between 25 kHz and 2 MHz). The other one that is the higher-power coil design has a single-layer primary and a secondary one. These Tesla coils are mainly used by hobbyists and at venues such as science museums to produce long
What I Will Vary, Not Change To Keep A Fair Test & What I Will
A Tesla Coil has 2 coils. A Tesla Coil has a primary coil. It also has a secondary coil. Evey Tesla Coil has at least 2 coils. The Tesla Coil By Kevin Fry. Each Tesla Coil has 2 coils we just learned that but a coil has a capacitor. If you don’t know what that is it’s just a place from it to store energy. Both the coils has a capacitor. As well for running it it’s different. In order to run a Tesla Coil you need a high power souce. The Tesla Coil takes a 120 vAC to several kilovolt transformer. It has a driver circuit that steps it up to an extremely high voltage. A tesla coil builds up its energy when it gets too full it does this electric discharge. When it does an electrical discharge it disputes electrical acrs. Electrical arcs are basically small lightning bolts that come from the Tesla Coil itself. Furthermore Nikola Tesla experiment with Tesla Coil. Nikola Tesla the man who made the tesla coil also experimented with it. He tried to do radio transmission through an electrical wave. Also he transmitted electrically through the air. And with a high frequency air-core transformer. The Tesla Coil By Kevin Fry. THe Tesla Coil defines most insulation material. It can transmit energy with
When the generated fields pass through magnetic materials which themselves contribute internal magnetic fields, ambiguities can arise about what part of the field comes from the external currents and what comes from the material itself. It is common to define another magnetic field quantity, usually called the "magnetic field strength" designated by H. It can be defined by the relationship, H = B0/μ0 = B/μ0 – M, and has the value of unambiguously designating the driving magnetic influence from external currents in a material, independent of the material's magnetic response. The relationship for B can be written in the equivalent form, B = μ0(H + M), H and M will have the same units, amperes/meter. To further distinguish B from H, B is sometimes called the magnetic flux density or the magnetic
The Earth’s magnetic field is a major component to exploring the earth. The north and the south poles have always been a guide for travelers. Using compasses, the direction of the north pole and the south pole has always been provided by the magnetic force of the magnetic field. What many people do not know though is the earth’s magnetic field provides way more than that. The magnetic field, also known as the magnetosphere, protects us from all kinds of harmful substances. Some of these substances include solar wind and harmful radiation from the sun. The magnetosphere also protects the atmosphere, which protects us.
The phenomenon called electromagnetic induction was first noticed and investigated by Michael Faraday, in 1831. Electromagnetic induction is the production of an electromotive force (emf) in a conductor as a result of a changing magnetic field about the conductor and is a very important concept. Faraday discovered that, whenever the magnetic field about an electromagnet was made to grow and collapse by closing and opening the electric circuit of which it was a part, an electric current could be detected in a separate conductor nearby. Faraday also investigated the possibility that a current could be produced by a magnetic field being placed near a coiled wire. Just placing the magnet near the wire could not produce a current. Faraday discovered that a current could be produced in this situation only if the magnet had some velocity. The magnet could be moved in either a positive or negative direction but had to be in motion to produce any current in the wire. The current in the coil is called an induced current, because the current is brought about (or “induced”) by a changing magnetic field (Cutnell and Johnson 705). The induced current is sustained by an emf. Since a source of emf is always needed to produce a current, the coil itself behaves as if it were a source of emf. The emf is known as an induced emf. Thus, a changing magnetic field induces an emf in the coil, and the emf leads to an induced current (705). He also found that moving a conductor near a stationary permanent magnet caused a current to flow in the wire as long as it was moving as in the magnet and coiled wire set-up.
It is the reason for the great technological movement of the 21st century. Its applications are used on a day-to-day basis. What is this form of energy? It is electricity. Electricity is defined as a form of energy from the existence of charged particles. The charged particles are either positive or negative (protons or electrons). Moreover, through the same principal, the phenomenon of magnetism is also applied on a day-to-day basis. Magnetism is defined as either an attractive or repulsive force between objects due to an electric charge. To thoroughly understand the strength of electricity and magnets, it is vital to first be cognizant of where and when they were discovered.
Now in-order for the Tesla to work it has to go through a series of steps in-order for this project to work as well as it is required. The first step for it work is that it has to be hooked up to the primary coil. As the primary coil is in action the capacitor acts like a sponge that soaks up the charge the primary coil is producing. The primary coil itself must be able to withstand the massive charge and huge surges of current it might produce. The second step consists of the capacitor building up so much charge that it breaks down the air resistance in the spark gap. The third step occurs when the current flows out of the capacitor and down the primary coil creating a magnetic field. The fourth step occurs when massive amount of energy makes the magnetic field collapse quickly and then generates an electric current in the secondary coil. This then leads to the voltage zipping through the air between the two coils; and creating sparks in the spark gap. This energy sloshes back and forth between the two coils several hundred times. This eventually results into the last step which occurs when; the charge in the second capacitor gets so high that it breaks free. This break then leads to the spectacular burst of electric current; which can illuminate fluorescent bulbs several feet away with no electrical wire
The proton precession magnetometer is most commonly used for land-based magnetic surveys.This magnetometer only measures the total amplitude (size) of the earth magnetic field. Usually these type of measurements are referred to as total field measurements.