does the other way around (from electrical to mechanical). Lorentz Force & EMF Lorentz force is the force on a point charge due to electromagnetic fields. It is given by the following equation in terms of the electric and magnetic fields F q(E vB) The induced emf in a conductor of length l moving with a speed v in a uniform magnetic field of flux density B can be determined by a e vB dl b In a coil of N turns‚ the induced emf can be calculated by e Concept
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1. Rationale of the study Our new technology the energy transfer wherein energy can be transferred from a source to a load via coupled magnetic resonance in the non radiative near field that can be used in some equipment that used in some electric energy as a source like the electric vehicles (EVs). We can use this energy transfer as a charger to EVs by microwave beams and laser beams to realize the remote energy supply using directional antenna. However when there is a obstruction in the path
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polarity” and repeat the steps above after you’ve let the compass stabilize. 11. Click on the electromagnet tab. Place the compass on the left side of the coil so that the compass center lies along the axis of the coil. (The y-component of the magnetic field is zero along the axis of the coil.) 12. Move the compass along a semicircular path above the coil until you’ve put it on the opposite side of the coil. Describe what happens to the compass needle. 13. Move the compass along a semicircular
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Prepared by Leong Yee Pak DESIGN QUESTIONS Below are some suggestions on how to go about in designing an experiment. Understand and remember the various instrument used for measuring the quantities‚ the methods used to produce them and the way to vary them. Guide for Design Questions Identify the variables: the independent variable‚ the dependent variable‚ and any variables or factors to be kept constant. Draw a labelled diagram to show the experimental set up. Ask yourself these
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-Faraday- his major contributions were in the fields of electromagnetism and electrochemistry. He explained the basis of magnetic field through his studies on the effects of magnetic field around a conductor which carried Direct Current (DC). In 1831‚ Faraday made one of his most renowned discoveries‚ the principle of electromagnetic induction by using the "induction ring". The electricity was generated by means of electromagnetic effect. This was the first version of an electric transformer. He
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ACKNOWLEDGEMENT It gives us great pleasure when a certain task is accomplished with great zeal and enthusiasm. We would like to extend our heartfelt thanks and deep sense of gratitude to all those who helped us in completing this project. First and foremost‚ we feel greatly indebted to Mr. D. M. SINGH and Mr. UBAID AHMAD KHAN‚ from the core of our heart for their constant support and valuable guidance time to time‚ because they encouraged and
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potential. Surface distribution of charges and dipoles and discontinuity in the field and potential. Poisson’s and Laplace’s equations. Boundary conditions and uniquencess theorem. Potential energy and energy density of electrostatic field. Method of images‚ potential due to a point charge in presence of a grounded conducting sphere. Multipole expansion for potential‚ Multipole expansion of the energy in an external field. Dipole-dipole interaction. 12hr Unit-II Electrostatics
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dielectric constant. 4. A point charge placed at any point on the axis of an electric dipole at some large distance experiences a force F. Find the force acting on the point charge when its distance from the dipole is quadrupled. 5. In the electric field of a point charge ‘q’‚ the four points A‚B‚C and D are equidistant from q‚ however AB>AC>AD. Calculate the work done in taking a unit charge along AB‚ AC and AD. 6. N identical spherical drops charged to the same potential ‘V’ is combined to form
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with variable suction is considered. The fluid flow is unsteady and a variable magnetic field is transversely applied to the plate. Evaluation of velocity gradients‚ temperature gradients and concentration gradients across the plate is done. Observations and discussions of the effects of various parameters on flow variables are done. The non-dimensional parameters observed and discussed are Hall parameter‚ M; Magnetic number‚ M 2; Eckert number‚ Ec; Rotational parameter‚ Er; Suction parameter‚ S
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piece of soft iron attached to each end of the magnet. The iron is also magnetized. The iron ends of the magnet serve to direct the magnetic field in the direction of a small iron cylinder that is positioned between the ends (or poles) of the magnet. Taking advantage of the soft iron’s characteristic to become highly magnetized‚ the iron cylinder focuses the magnetic field. The Electrical Current Surrounding the cylinder is a rectangular frame with a copper wire coil‚ with the ends of the wire attached
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