• Application Fields ABSTRACT “Red Tacton” gives a whole new meaning to the term “networking”. It is a new personal area networks technology which uses the surface of the human body‚ as a safe data transmission path‚ at speeds up to 10 Mbps. Red Tacton does not rely on electromagnetic or a light wave to transmit data. It makes use of weak electric fields on the surface of the body. Using a new super-sensitive photonic electric field sensor‚ it can achieve
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Amrita VISHWA VIDYAPEETHAM (University established u/s 3 of UGC Act 1956) Amrita Entrance Examination – Engineering PHYSICS‚ CHEMISTRY & MATHEMATICS Question booklet Version Code Question booklet no. Number of pages Number of questions Time 120 : 3 hrs Max. Marks : 360 Registration number Name of the candidate Signature of the candidate INSTRUCTIONS TO THE CANDIDATES GENERAL 1. Any malpractice or attempt to commit malpractice in the examination hall will lead
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Name ____________________ Electric Fields Go to http://phet.colorado.edu/simulations/sims.php?sim=Electric_Field_Hockey and click on Run Now. 1. You rub balloons in your hair and then hang them like in the picture below. Explain why you think they move apart and what might affect how far apart they get. They move apart because they become charged while you are rubbing them in your hair and the charges are the same on both balloons. The more charges you get on the balloon
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constant’ of a medium. Briefly explain why the capacitance of a parallel plate capacitor increases‚ oii introducing a dielectric medium between the plates. 2 Q. 7. Why does a paramagnetic substance display greater magnetisation for the same magnetising field when cooled? How does a diamagnetic substance respond to similar temperature changes? 2 Q. 8. Explain how electron mobility changes for a good conductor when (i) the temperature of the conductor is decreased at constant potential difference and (ii)
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force that affect with electric and magnetic fields. The electromagnetic force is carried by the photon and is responsible for atomic structure‚ chemical reactions‚ the attractive and repulsive forces associated with electrical charge and magnetism‚ and all other electromagnetic phenomena. According to Coulomb’s Law‚ we know electric charges get Coulomb force in the electric field while current receives another applied force‚ which is Ampere force when it is in a magnetic field. Overall‚ electromagnetic
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ABSTRACT All the user-friendly services require technologies that enable communication between people and objects in close proximity. As electronic devices become smaller‚ lower in power requirements‚ and less expensive‚ we have begun to adorn our bodies with personal information and communication appliances. Such devices include cellular phones‚ personal digital assistants (PDA’s)‚ pagers and many more. This report describes a human area networking technology that enables communication by
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2. For what electric field strength would the current in a 2.0 mm diameter nichrome wire be the same as the current in a 1.0 mm diameter aluminum wire in which the electric field strength is 0.0095 N/C? [Conductivity of Aluminum = 3.5 x 107Ω -1m-1 and conductivity of Nichrome = 6.7 x 105Ω -1m-1] 3. What is the escape speed of an electron launched from the surface of a 1.0 cm diameter plastic sphere that has been charged to +11 nC? 4. The electric potential in a region
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explaining the unique new functional features and enormous potential of RedTacton as a Human Area Networking technology. Here‚ the human body acts as a transmission medium supporting half duplex communication at 10Mbit/s. Keywords: RedTacton‚ Electric field sensing I. INTRODUCTION Red Tacton technology is an electronic future where information can be accessible whenever and wherever needed at our finger tips. Some of the communication equipment that is required to Provide this immediate access
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Name ____________________________________ Electric Fields Go to http://phet.colorado.edu/simulations/sims.php?sim=Electric_Field_Hockey and click on Run Now. 1. You rub balloons in your hair and then hang them like in the picture below. Explain why you think they move apart and what might affect how far apart they get. A balloon becomes negatively charged when it is rubbed on a person’s hair. This occurs because all the protons and neutrons leave the balloon and attach
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COULOMB’S LAW INTRODUCTION The magnitude of the force of attraction or repulsion between two electric charges at rest was studied by Charles Coulomb. He formulated a law‚ known as "COULOMB’S LAW". STATEMENT According to Coulomb’s law: The electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of charges. The electrostatic force of attraction or repulsion between two point charges is inversely proportional to the square of
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