for collection of data | | Total | | Aim: To study the effect of spacing of the coils on the strength of an electromagnet Apparatus Required: * An iron nail (around 8 cm) * A copper wire (15 cm) * Vernier Logger Pro * Magnetic Field sensor * Battery * Switch * Sand Paper Background Theory: Some metals such as nickel and iron can be magnetised using an electromagnet. The strength of the electromagnet depends on various factors which include the current‚ no
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charged particles. This electromagnetic force is typically apparent in magnetic fields‚ electric fields and sources of light. This electromagnetic force that occurs between particles is one of the four ultimate interfaces in nature. On April 8‚ 1911 in Leiden‚ Heike Kamerlingh Onnes discovered Superconductivity. Superconductivity is the phenomenon when a material cooled below a certain temperature emits no electromagnetic fields and has zero electrical resistance. With this discovery and electrical
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of GMR is based on the change in the resistance of very thin (scale of nanometers) ferromagnetic materials when an external magnetic field is applied. The term “Giant” is to describe the size of the change in the resistivity in the order of 10% to 20%‚ considered to be enormous compared to the response of other magnetic sensors in the presence of an external magnetic field. Let us proceed with a historical overview‚ beginning from the original perception of the idea up to the creation of the first
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® keep it simple science ABN 54 406 994 557 (02) 6583 4333 PO Box 2575 PORT MACQUARIE NSW 2444 FAX (02) 6583 9467 www.keepitsimplescience.com.au mail@keepitsimplescience.com.au keep it simple science Photocopy Master Sheets Years 7-8 FORCES Disk filename = “02.Forces” Copying is permitted according to the Site Licence Conditions only 1 Site Licence Conditions Our product is supplied on CD • You may copy the CD for back-up only. • You may store the CD contents
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of these two exerts a greater electrostatic force on the other? Q.2> What is the force experienced by a positively charges particle Q moving at right angles to a uniform electric field E. Q.3> What is the order of voltages that can be built up using a Van De Graff generator? Q.4> What is the angle b/w Electric field and Dipole moment at an axial point? Q.5> Define gyromagnetic ratio. What is it’s value? Q.6> State the condition in which terminal voltage across a secondary cell is equal to its
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Project #15: Make Homemade Glue from Milk With milk‚ white vinegar and baking soda‚ you can make your own glue right at home. Make it an investigatory project by changing up the recipe and testing which results in the strongest glue. You could also try varying the ingredients to make it dry faster‚ or work on different materials (wood vs. plastic vs. paper). Image via wonderhowto.com A.) --WATER FLOW IN PLANT: Can water travel through plant stems? MATERIALS: graduated one
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induction states the induced emf or voltage in a coil is proportional to the rate of change of magnetic flux through a coil‚ this is shown blew: Ƹ= -dɸ/dt Equation 6.1 The flux of the magnetic field is defined and the following: ɸ=BAcosΘ Equation 6.2 B is the magnetic field at the location of the coil. A is the cross sectional area of the coil‚ and Θ is the angle between the field and the area A. There is several different ways to create a changing flux though the coil
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appliances‚ and toys in every room in your home. They are a very important and vital part of modern life. Have you ever played with magnets before? If so‚ you are well on your way to understanding how simple electric motors work. Magnets have a magnetic field with a north pole and a south pole. If you play with two magnets and try to push the north poles of each magnet together‚ the magnets will not go together. They will repel each other. The same thing happens if you try to push two south poles together
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A direct current (DC) motor is a fairly simple electric motor that uses electricity and amagnetic field to produce torque‚ which turns the motor. At its most simple‚ a DC motorrequires two magnets of opposite polarity and an electric coil‚ which acts as an electromagnet. The repellent and attractive electromagnetic forces of the magnets provide the torque that causes the DC motor to turn. If you’ve ever played with magnets‚ you know that they are polarized‚ with a positive and a negative side. The
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The poem‚ In Flanders Field by John McCrae‚ explains the emotions of the soldiers who fought in World War 1. McCrae demonstrates this with the words he uses to set the changing tone of this poem. The poem switches from pride to depressing and then to a warning which shows how quickly emotions can change in the course of war. In addition to the tone of the poem the theme is also thought provoking. In the first paragraph the narrator speaks with pride for not only the people who died in battle but
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