k/T >>1 2.6.1.2. Energy Transfer Without k/T >>1 2.6.1.3. Influence of k/T on the Total Energy of the System 2.6.2. Dielectric Disks 2.6.3. Capacitively-loaded conducting wire loops 3. WiTricity 3.1. What WiTricity is not? 3.1.1. Traditional Magnetic Induction 3.1.2. Radioactive Power Transfer 3.1.3. MRI 3.2. What WiTricity is? 3.3. Why WiTricity? 3.4. Range 3.5. Evanescent Waves 3.6. How it works 4. Prototype Circuit 4.1.
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in which their compass needles can point either “up” or “down” in relation to a magnetic field. Spin therefore lends itself elegantly to a new kind of binary logic of ones and zeros. The movement of spin‚ like the flow of charge‚ can also carry information among devices. One advantage of spin over charge is that spin can be easily manipulated by externally applied magnetic fields‚ a property already in use in magnetic storage technology. Another more subtle (but potentially significant) property of
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directions they would repel. Discussion: This occurs due to the magnetic field created by the current. When the current is travelling in the same directions the north and south magnetic fields are closer and cause it to attract but when they are opposite the south and north fields are closest causing it to repel. Analysis: All electric currents cause magnetic fields and using the right hand rule‚ we can find which way the magnetic field is going by the direction the current
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of magnets Hard disks record data on a thin magnetic coating. • Magnetic recording media: VHS tapes contain a reel of magnetic tape. The information that makes up the video and sound is encoded on the magnetic coating on the tape. Common audio cassettes also rely on magnetic tape. Similarly‚ in computers‚ floppy disks and hard disks record data on a thin magnetic coating. • Credit‚ debit‚ and ATM cards: All of these cards have a magnetic strip on one side. This strip encodes the information
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that an electric current created a magnetic field around the conductor. It was then discovered that this effect could be enhanced greatly by winding the conductor into a coil. The effect proved to be two-way: If a conductor‚ maybe in the form of a coil was placed in a changing magnetic field‚ a current could be made to flow in it; this is called induction. So imagine a coil‚ and imagine that we apply a voltage to it. As current starts to flow‚ a magnetic field is created. But this means that our
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we say a substance is magnetic. (HINT: Be sure to mention the role of the Electrons) If a substance is magnetic‚ we are actually saying that it is able to be acted upon by a magnetic field. When electricity flows through a circuit‚ it creates a magnetic field.When a magnet cuts across a circuit‚ a voltage is produced. 2. Discuss the relationship between electric and magnetic fields. (HINT: Be sure to discuss what happens when electric current is applied to a magnetic field.) The relationship that
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Working When a current carrying conductor is placed in a magnetic field‚ it experiences a force and tends to move in the direction as per Fleming’s left hand rule. Fleming left hand rule: If the first and the second finger and the thumb of the left hand are held so that they are at right angle to each other‚ then the thumb shows the direction of the force on the conductor‚ the first finger points towards the direction of the magnetic field and the second finger shows the direction of the current
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of a loop that is able to rotate in a magnetic field. The electric motor uses electrical energy to make the loops rotate which creates mechanical energy. In the electric generator it uses mechanical energy to make the loops spin resulting in the creation of electric current within the loop. The way an electric generator functions is based on the principal of "electromagnetic induction". Electro magnetic induction is when you move a wire through a magnetic field causing electric current to enter the
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SPIN VALVE TRANSISTOR Technical Seminar Report Submitted in partial fulfillment Of the requirements for the award of the degree of BACHELOR OF TECHNOLOGY In ELECTRONICS & COMMUNICATION ENGINEERING By B.AVINASH (08C01A0426) . Department of Electronics and Communication Engineering
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A generator is a machine that converts mechanical energy into electrical energy by using the principle of magnetic induction. DC generator or direct current generator generates a voltage when speed and flux are met. This machine is called a unidirectional (dynamo).It consists of the same basic elements as a simple AC generator like the multi-turn coil rotating uniformly in a magnetic field .The output of which is a series of emf pulses‚ all in the same positive direction resulting in an average
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