PHYSICS HIGHER SECONDARY SECOND YEAR VOLUME - I Revised based on the recommendation of the Textbook Development Committee Untouchability is a sin Untouchability is a crime Untouchability is inhuman TAMILNADU TEXTBOOK CORPORATION COLLEGE ROAD‚ CHENNAI - 600 006 c Government of Tamilnadu First edition - 2005 Revised edition - 2007 Dr. S. GUNASEKARAN Reader Post Graduate and Research Department of Physics Pachaiyappa’s College‚ Chennai - 600 030 CHAIRPERSON Reviewers P SARVAJANA
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nonmagnetic and and is placed in a uniform magnetic field of magnitude B0 . The coil sides are of radius R and are uniformly spaced around the rotor surface. The first coil carrying a current I1 and second coil carrying a current I2 . Assuming that the rotor is 0.30 m long‚ R=0.13 m‚ and B0 = 0.85 T‚ find the Θ directed torque as a function of rotor position α for (a) I1 =0A and I2 =5A‚ (b)I1 =5A and I2 =0A‚ and (c)I1 =8A and I2 =8A. Uniform magnetic field‚ B 0y r θ Ι2 Ι1 R α
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MINISTRY OF EDUCATION FIJI SEVENTH FORM EXAMINATION – 2004 EXAMINER’S REPORT PHYSICS GENERAL COMMENTS PAPER I The format for 2004 FSF Physics Examination paper has been similar to 2003 . The examination paper on the whole had tested knowledge and concepts expected to be learned by seventh form physics students in Fiji‚ particularly : - familiarity with basic concepts ; - problem solving techniques ; - knowledge of practical situations encountered during practical lessons
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10.2 Properties of Cathode rays Aim: to determine some of the properties of the rays which come from the cathode of a discharge tube. Equipment * Two power packs * Two plug-plug leads * One pair of magnets * Induction coil * Four plug-clip leads * Discharge tubes (Maltese cross‚ electric plates‚ rotating wheel‚ screen display) Theory: This experiment is designed to show you the properties of cathode rays as discovered by Sir William Crookes. Method: 1. Connect the
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and adaptive function and the Control circuit: on as one integrated unit Actuators may be called upon to change shape‚ position‚ natural frequency‚ or mechanical characteristics in response to changes in temperature‚ electric fields‚ and/or magnetic fields. Usually‚ four types of materials are commonly used for actuators: * shape memory alloys‚ * piezoelectric ceramics‚ * magnetostrictive materials‚ * and electrorheological/magnetorheological fluids. Shape memory alloys
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magnetism? When two pieces of iron are attracted to each other by physical means or electrical means. 2. Torque is A. Strength that a motor produces by turning. 3. A magnetic field is D. All the above. 4. True or False: A permanent magnet is a piece of material that has been magnetized and can hold its magnetic strength for a reasonable length of time. True. 5. How is an electromagnet produced? Through electricity. 6. Which of the following produces the best electromagnet
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amount of noise. Such traits were the reason maglev trains should be competitive with airlines. Then again the extremely great prices and economic cost (In short term) did not let much creation around the world and limited it to one line in Shanghai. (Magnetic levitation train - Definition) Figure 2 (Electromagnetic Suspension) Figure 2 (Electromagnetic Suspension) Maglev trains mostly work on the different techniques and main principles of physics and magnetism. The first would be
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CBSE XII | PHYSICS Sample Paper - 1 CBSE Board Class XII Physics Sample Paper - 1 Time: Three Hours Maximum Marks: 70 General Instructions (a) All questions are compulsory. (b) There are 29 questions in total. Questions 1 to 8 carry one mark each‚ questions 9 to 16 carry two marks each‚ questions 17 to 25 carry three marks each and questions 27 to 29 carry five marks each. (c) Question 26 is a value based question carrying four marks. (d) There is no overall choice. However‚ an internal choice
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Electrodynamic Wattmeter The electrodynamic wattmeter is used to measure (Useful) power taken from ac power supplies. The electrodynamic wattmeter uses the reaction between the magnetic fields of two current-carrying coils‚ one fixed and the other movable. The voltage and current coils are wound around a laminated iron core to produce a magnetic field across the air gap. When the current through the fixed-position field windings is the same as current through the load and the current through the moving coil
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Applications of Differential Forms Maxwell Faraday and Maxwell Ampere Equations R. M. Kiehn (in preparation - last update 10/31/97) Physics Department‚ University of Houston‚ Houston‚ Texas Abstract: The topological universality of the Maxwell Faraday and Maxwell Ampere equations is an artifact of C2 differential forms on a domain of dimension n * 4. Starting with a 1-form of (electromagnetic) Action‚ the Maxwell Faraday equations become a consequence of the Poincare lemma. Starting from an
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